{"id":4165,"date":"2025-09-16T11:12:00","date_gmt":"2025-09-16T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/fsk-modulation-what-it-is-how-fsk-works-digital-communication\/"},"modified":"2026-06-22T07:11:14","modified_gmt":"2026-06-22T07:11:14","slug":"fsk-modulation-what-it-is-how-fsk-works-digital-communication","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/vi\/glossary\/fsk-modulation-what-it-is-how-fsk-works-digital-communication","title":{"rendered":"\u0110i\u1ec1u ch\u1ebf FSK l\u00e0 g\u00ec v\u00e0 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5.webp\" alt=\"What is FSK Modulation and How Does It Work\" class=\"wp-image-4163\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5.webp 1312w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5-300x168.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5-1024x574.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5-768x431.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/9073f9f903a14b97a453fc457fe9d1c5-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi v\u00f4 h\u00ecnh v\u00e0 r\u1ed9ng l\u1edbn c\u1ee7a truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y v\u00e0 quang h\u1ecdc, d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01a1n thu\u1ea7n \u201cbay\u201d k\u1ef3 di\u1ec7u trong kh\u00f4ng kh\u00ed. Thay v\u00e0o \u0111\u00f3, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a c\u1ea9n th\u1eadn l\u00ean c\u00e1c s\u00f3ng, m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111i\u1ec1u ch\u1ebf. Trong s\u1ed1 c\u00e1c k\u1ef9 thu\u1eadt kh\u00e1c nhau, <strong>\u0110i\u1ec1u ch\u1ebf d\u1ecbch chuy\u1ec3n t\u1ea7n s\u1ed1 (FSK)<\/strong> n\u1ed5i b\u1eadt nh\u1edd \u0111\u1ed9 b\u1ec1n b\u1ec9 v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n. D\u00f9 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u1eeda ga-ra, b\u1ed9 \u0111i\u1ec1u ch\u1ebf v\u1ec7 tinh hay m\u1ea1ng c\u00e1p quang t\u1ed1c \u0111\u1ed9 cao, FSK r\u1ea5t c\u00f3 th\u1ec3 \u0111ang \u0111\u1ea3m nhi\u1ec7m m\u1ed9t vai tr\u00f2 n\u00e0o \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft <strong>FSK \u0111i\u1ec1u ch\u1ebf l\u00e0 g\u00ec<\/strong>, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng, nh\u1eefng \u01b0u \u0111i\u1ec3m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng thi\u1ebft y\u1ebfu c\u1ee7a n\u00f3 trong l\u0129nh v\u1ef1c <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>module quang<br><\/strong><\/a>. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u ngay!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u ch\u1ebf FSK g\u1eedi d\u1eef li\u1ec7u s\u1ed1 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1ea7n s\u1ed1 cho bit nh\u1ecb ph\u00e2n 0 v\u00e0 1. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1eef cho th\u00f4ng \u0111i\u1ec7p r\u00f5 r\u00e0ng, ngay c\u1ea3 khi c\u00f3 nhi\u1ec5u.<\/p><\/li><li><p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 d\u1ec5 thi\u1ebft k\u1ebf. Nhi\u1ec1u thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng n\u00f3, nh\u01b0 b\u1ed9 \u0111\u00e0m, b\u1ed9 \u0111i\u1ec1u ch\u1ebf v\u00e0 b\u00e0n ph\u00edm kh\u00f4ng d\u00e2y.<\/p><\/li><li><p>\u0110i\u1ec1u ch\u1ebf FSK s\u1eed d\u1ee5ng c\u00e1c t\u00edn hi\u1ec7u ri\u00eang bi\u1ec7t cho m\u1ed7i bit. \u0110i\u1ec1u n\u00e0y ngh\u0129a l\u00e0 m\u1ed7i bit \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i tr\u00ean m\u1ed9t k\u00eanh ri\u00eang. Nh\u1edd v\u1eady, d\u1eef li\u1ec7u kh\u00f4ng b\u1ecb l\u1eabn l\u1ed9n.<\/p><\/li><li><p>\u0110\u1ec3 gi\u1ea3i \u0111i\u1ec1u ch\u1ebf t\u00edn hi\u1ec7u FSK, c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 V\u00f2ng kh\u00f3a pha (PLL) theo d\u00f5i s\u1ef1 thay \u0111\u1ed5i t\u1ea7n s\u1ed1. Ch\u00fang chuy\u1ec3n \u0111\u1ed5i nh\u1eefng thay \u0111\u1ed5i n\u00e0y tr\u1edf l\u1ea1i th\u00e0nh d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n.<\/p><\/li><li><p>H\u00e3y ch\u1ecdn \u0111i\u1ec1u ch\u1ebf FSK n\u1ebfu b\u1ea1n c\u1ea7n kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u m\u1ea1nh v\u00e0 d\u1ec5 s\u1eed d\u1ee5ng. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p \u0111\u1ec3 truy\u1ec1n c\u00e1c th\u00f4ng \u0111i\u1ec7p s\u1ed1 c\u01a1 b\u1ea3n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 Keying D\u1ecbch t\u1ea7n s\u1ed1 (FSK) l\u00e0 g\u00ec? Kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ec1 b\u1ea3n ch\u1ea5t, <strong>\u0110i\u1ec1u ch\u1ebf d\u1ecbch chuy\u1ec3n t\u1ea7n s\u1ed1 (FSK)<\/strong> l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111i\u1ec1u ch\u1ebf s\u1ed1, trong \u0111\u00f3 t\u1ea7n s\u1ed1 c\u1ee7a t\u00edn hi\u1ec7u mang \u0111\u01b0\u1ee3c thay \u0111\u1ed5i \u0111\u1ec3 bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u s\u1ed1 (c\u00e1c bit nh\u1ecb ph\u00e2n 1 v\u00e0 0).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\">A <strong>bit nh\u1ecb ph\u00e2n \u20181\u2019<\/strong> \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi m\u1ed9t t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: <em>cao<\/em> t\u1ea7n s\u1ed1 f1).<\/p><\/li><li><p style=\"margin: 0px;\">A <strong>bit nh\u1ecb ph\u00e2n \u20180\u2019<\/strong> \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi m\u1ed9t t\u1ea7n s\u1ed1 kh\u00e1c c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: <em>\u0111\u1ed9 tr\u1ec5 th\u1ea5p<\/em> t\u1ea7n s\u1ed1 f2).<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u201cd\u1ecbch chuy\u1ec3n\u201d gi\u1eefa hai t\u1ea7n s\u1ed1 n\u00e0y ch\u00ednh l\u00e0 ngu\u1ed3n g\u1ed1c t\u00ean g\u1ecdi FSK. K\u1ef9 thu\u1eadt n\u00e0y c\u1ef1c k\u1ef3 kh\u00e1ng nhi\u1ec5u d\u1ef1a tr\u00ean bi\u00ean \u0111\u1ed9, n\u00ean r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u00e0 c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 thay \u0111\u1ed5i.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e.webp\" alt=\"Frequency Shift Keying\" class=\"wp-image-4164\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e.webp 1312w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e-300x168.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e-1024x574.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e-768x431.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/6d3b63b527104371b80acada1a95c78e-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 FSK ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? Gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng hai n\u1ed1t nh\u1ea1c kh\u00e1c nhau. M\u1ed9t n\u1ed1t (v\u00ed d\u1ee5: n\u1ed1t \u0110\u00f4 cao) bi\u1ec3u th\u1ecb ch\u1eef \u201c1\u201d, v\u00e0 n\u1ed1t kia (n\u1ed1t \u0110\u00f4 th\u1ea5p) bi\u1ec3u th\u1ecb ch\u1eef \u201c0\u201d. \u0110\u1ec3 g\u1eedi d\u00e3y nh\u1ecb ph\u00e2n <strong>1, 0, 1, 1,<\/strong> b\u1ea1n s\u1ebd ph\u00e1t l\u1ea7n l\u01b0\u1ee3t: <strong>N\u1ed1t \u0110\u00f4 cao, n\u1ed1t \u0110\u00f4 th\u1ea5p, n\u1ed1t \u0110\u00f4 cao, n\u1ed1t \u0110\u00f4 cao<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 c\u00e1ch m\u1ed9t b\u1ed9 \u0111i\u1ec1u ch\u1ebf FSK ho\u1ea1t \u0111\u1ed9ng v\u1ec1 m\u1eb7t \u0111i\u1ec7n t\u1eed. M\u1ed9t b\u1ed9 dao \u0111\u1ed9ng \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng \u0111i\u1ec7n \u00e1p (VCO) chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1 \u0111\u1ea7u ra c\u1ee7a n\u00f3 m\u1ed9t c\u00e1ch nhanh ch\u00f3ng d\u1ef1a tr\u00ean lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n \u0111\u1ea7u v\u00e0o.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" ><strong>C\u00e1c lo\u1ea1i FSK ch\u00ednh<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 FSK c\u01a1 b\u1ea3n r\u1ea5t m\u1ea1nh m\u1ebd, nh\u01b0ng hai phi\u00ean b\u1ea3n ph\u00e1t tri\u1ec3n t\u1eeb n\u00f3 ph\u1ed5 bi\u1ebfn h\u01a1n trong c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Vi\u1ebft t\u1eaft<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110i\u1ec1u ch\u1ebf d\u1ecbch t\u1ea7n s\u1ed1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>FSK<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ea1ng c\u01a1 b\u1ea3n v\u1edbi s\u1ef1 chuy\u1ec3n \u0111\u1ed5i t\u1ee9c th\u1eddi gi\u1eefa hai t\u1ea7n s\u1ed1.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n gi\u1ea3n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec1u khi\u1ec3n t\u1eeb xa RF \u0111\u01a1n gi\u1ea3n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110i\u1ec1u ch\u1ebf d\u1ecbch t\u1ea7n s\u1ed1 t\u1ed1i thi\u1ec3u<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MSK<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ed9t d\u1ea1ng FSK \u0111\u1eb7c bi\u1ec7t v\u00e0 hi\u1ec7u qu\u1ea3, trong \u0111\u00f3 \u0111\u1ed9 d\u1ecbch t\u1ea7n s\u1ed1 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Hi\u1ec7u qu\u1ea3 v\u1ec1 ph\u1ed5<\/strong>, c\u00f3 bao bi\u00ean \u0111\u1ed9 kh\u00f4ng \u0111\u1ed5i<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Truy\u1ec1n th\u00f4ng di \u0111\u1ed9ng (GSM)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>FSK Gauss<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>GFSK<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MSK \u0111\u01b0\u1ee3c l\u1ecdc b\u1eb1ng b\u1ed9 l\u1ecdc Gauss \u0111\u1ec3 l\u00e0m cho c\u00e1c chuy\u1ec3n ti\u1ebfp t\u1ea7n s\u1ed1 tr\u1edf n\u00ean m\u01b0\u1ee3t m\u00e0 h\u01a1n n\u1eefa.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Gi\u1ea3m c\u00f4ng su\u1ea5t d\u1ea3i b\u00ean<\/strong>, gi\u1ea3m thi\u1ec3u nhi\u1ec5u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Truy\u1ec1n th\u00f4ng Bluetooth\u00ae (BT)<\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 T\u1ea1i sao s\u1eed d\u1ee5ng FSK? C\u00e1c \u01b0u \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng ch\u00ednh<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>FSK<\/strong> v\u1eabn ph\u1ed5 bi\u1ebfn v\u00ec nhi\u1ec1u l\u00fd do thuy\u1ebft ph\u1ee5c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u cao:<\/strong> V\u00ec d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a trong c\u00e1c thay \u0111\u1ed5i t\u1ea7n s\u1ed1 ch\u1ee9 kh\u00f4ng ph\u1ea3i trong bi\u00ean \u0111\u1ed9, n\u00ean n\u00f3 h\u1ea7u nh\u01b0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u t\u0129nh, dao \u0111\u1ed9ng c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u v\u00e0 c\u00e1c d\u1ea1ng nhi\u1ec5u ph\u1ed5 bi\u1ebfn kh\u00e1c.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u00ednh \u0111\u01a1n gi\u1ea3n:<\/strong> D\u1ec5 t\u1ea1o v\u00e0 gi\u1ea3i m\u00e3, d\u1eabn \u0111\u1ebfn vi\u1ec7c tri\u1ec3n khai ph\u1ea7n c\u1ee9ng chi ph\u00ed th\u1ea5p.<\/p><\/li><li><p style=\"margin: 0px;\"><strong><p>Future-Proofing:<\/p><\/strong> Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u n\u00e0y khi\u1ebfn FSK tr\u1edf n\u00ean c\u1ef1c k\u1ef3 \u0111\u00e1ng tin c\u1eady cho c\u00e1c li\u00ean k\u1ebft d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 th\u1ea5p \u0111\u1ebfn trung b\u00ecnh quan tr\u1ecdng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u1ee8ng d\u1ee5ng<\/strong> \u1edf kh\u1eafp m\u1ecdi n\u01a1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>\u0110o t\u1eeb xa<\/strong> v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng SCADA (v\u00ed d\u1ee5: \u0111\u1ed3ng h\u1ed3 th\u00f4ng minh)<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Bluetooth\u00ae<\/strong> v\u00e0 c\u00e1c giao th\u1ee9c kh\u00f4ng d\u00e2y t\u1ea7m ng\u1eafn kh\u00e1c<\/p><\/li><li><p style=\"margin: 0px;\"><strong>B\u1ed9 \u0111i\u1ec1u h\u1ee3p t\u1ed1c \u0111\u1ed9 th\u1ea5p<\/strong> (v\u00ed d\u1ee5: cho c\u00e1c thi\u1ebft b\u1ecb thanh to\u00e1n th\u1ebb t\u00edn d\u1ee5ng)<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Nh\u1eadn d\u1ea1ng t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn (RFID)<\/strong> th\u1ebb<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng quang<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 FSK trong th\u1ebf gi\u1edbi c\u00e1c module quang v\u00e0 chuy\u00ean m\u00f4n c\u1ee7a LINK-PP<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 n\u01a1i t\u00edn hi\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1 g\u1eb7p photon. Trong m\u1ea1ng quang, <strong>gi\u00e1m s\u00e1t v\u00e0 qu\u1ea3n l\u00fd<\/strong> c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quy m\u00f4 l\u1edbn l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Vi\u1ec7c n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua m\u1ed9t k\u00eanh d\u1eef li\u1ec7u quang t\u1ed1c \u0111\u1ed9 th\u1ea5p chuy\u00ean d\u1ee5ng <strong>k\u00eanh d\u1eef li\u1ec7u quang<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00eanh n\u00e0y c\u1ea7n c\u1ef1c k\u1ef3 b\u1ec1n b\u1ec9, v\u00ec n\u00f3 mang d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n v\u00e0 qu\u1ea3n l\u00fd quan tr\u1ecdng (v\u00ed d\u1ee5: nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t TX\/RX) <strong>ngay c\u1ea3 khi k\u00eanh d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao ch\u00ednh b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/strong>. \u0110\u00e2y ch\u00ednh l\u00e0 l\u0129nh v\u1ef1c FSK t\u1ecfa s\u00e1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>optical transceiver<\/strong><\/a> v\u1edbi b\u1ed9 \u0111i\u1ec1u ch\u1ebf FSK t\u00edch h\u1ee3p c\u00f3 th\u1ec3 ch\u1ed3ng d\u1eef li\u1ec7u qu\u1ea3n l\u00fd n\u00e0y l\u00ean s\u00f3ng mang quang. M\u1ed9t b\u1ed9 thu \u1edf \u0111\u1ea7u kia gi\u1ea3i \u0111i\u1ec1u ch\u1ebf t\u00edn hi\u1ec7u FSK \u0111\u1ec3 truy xu\u1ea5t th\u00f4ng tin s\u1ee9c kh\u1ecfe thi\u1ebft y\u1ebfu c\u1ee7a li\u00ean k\u1ebft, to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh \u0111\u1ec1u kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t t\u00ednh n\u0103ng then ch\u1ed1t trong c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i <strong>qu\u1ea3n l\u00fd m\u1ea1ng<\/strong> and <strong>gi\u00e1m s\u00e1t hi\u1ec7u su\u1ea5t quang h\u1ecdc<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia t\u00ecm ki\u1ebfm c\u00e1c th\u00e0nh ph\u1ea7n quang \u0111\u00e1ng tin c\u1eady v\u00e0 th\u00f4ng minh, vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> t\u00edch h\u1ee3p kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ebf FSK ti\u00ean ti\u1ebfn v\u00e0o c\u00e1c m\u00f4-\u0111un quang c\u1ee7a m\u00ecnh, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng <strong>qu\u1ea3n l\u00fd m\u1ea1ng v\u01b0\u1ee3t tr\u1ed9i<\/strong> and <strong>ch\u1ea9n \u0111o\u00e1n t\u1eeb xa<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, b\u1ed9 thu ph\u00e1t <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475782.htm\"><strong>SFP-10G-ZR<\/strong><\/a> m\u00f4-\u0111un quang SFP+ 10G s\u1eed d\u1ee5ng s\u00f3ng mang FSK t\u00edch h\u1ee3p \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u1eb7c tr\u01b0ng c\u1ee7a n\u00f3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM)<\/strong><\/a> \u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a m\u00f4-\u0111un theo th\u1eddi gian th\u1ef1c, t\u1eeb \u0111\u00f3 ch\u1ee7 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec v\u00e0 gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u2014 m\u1ed9t t\u00ednh n\u0103ng then ch\u1ed1t \u0111\u1ed1i v\u1edbi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\"><strong>k\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/strong><\/a> and <strong>c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng 5G<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 K\u1ebft lu\u1eadn: Con ng\u1ef1a k\u00e9o th\u1ea7m l\u1eb7ng, b\u1ec1n b\u1ec9<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\" style=\"color: rgb(15, 17, 21);\"><strong>\u0111i\u1ec1u ch\u1ebf FSK<\/strong> c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u01a1 \u0111\u1ed3 nhanh nh\u1ea5t hay ph\u1ee9c t\u1ea1p nh\u1ea5t, nh\u01b0ng \u0111\u1ed9 b\u1ec1n v\u00e0 s\u1ef1 \u0111\u01a1n gi\u1ea3n c\u1ee7a n\u00f3 \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh v\u1ecb th\u1ebf nh\u01b0 m\u1ed9t c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng c\u1ea3 trong truy\u1ec1n th\u00f4ng RF l\u1eabn <strong>truy\u1ec1n th\u00f4ng quang<\/strong>. T\u1eeb b\u00e0n ph\u00edm kh\u00f4ng d\u00e2y c\u1ee7a b\u1ea1n \u0111\u1ebfn c\u00e1c c\u00e1p quang v\u01b0\u1ee3t \u0111\u1ea1i d\u01b0\u01a1ng cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho internet, FSK th\u01b0\u1eddng l\u00e0 \u201ccon ng\u1ef1a th\u1ed3\u201d \u00e2m th\u1ea7m nh\u01b0ng v\u1eefng ch\u1eafc, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady \u0111\u1ebfn \u0111\u00fang n\u01a1i c\u1ea7n \u0111\u1ebfn.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a3 C\u00c2U H\u1eceI TH\u01af\u1edcNG G\u1eb6P<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >FSK l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FSK l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ebf d\u1ecbch chuy\u1ec3n t\u1ea7n s\u1ed1 (Frequency Shift Keying). B\u1ea1n s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec3 g\u1eedi d\u1eef li\u1ec7u s\u1ed1 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1ea7n s\u1ed1 c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o s\u1eed d\u1ee5ng \u0111i\u1ec1u ch\u1ebf FSK?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n s\u1ebd t\u00ecm th\u1ea5y \u0111i\u1ec1u ch\u1ebf FSK trong c\u00e1c b\u1ed9 \u0111\u00e0m, modem, b\u00e0n ph\u00edm kh\u00f4ng d\u00e2y v\u00e0 m\u00e1y nh\u1eafn tin (pager). Nhi\u1ec1u \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa c\u0169ng s\u1eed d\u1ee5ng FSK \u0111\u1ec3 g\u1eedi t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec khi\u1ebfn FSK c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u t\u1ed1t?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">FSK s\u1eed d\u1ee5ng c\u00e1c t\u1ea7n s\u1ed1 kh\u00e1c nhau cho m\u1ed7i bit. B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn ra nh\u1eefng thay \u0111\u1ed5i n\u00e0y, do \u0111\u00f3 th\u00f4ng \u0111i\u1ec7p c\u1ee7a b\u1ea1n v\u1eabn r\u00f5 r\u00e0ng ngay c\u1ea3 khi c\u00f3 nhi\u1ec5u.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1eb9o: FSK ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nh\u1eefng n\u01a1i c\u00f3 nhi\u1ec1u nhi\u1ec5u \u0111i\u1ec7n t\u1eed.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u1ea7n nh\u1eefng g\u00ec \u0111\u1ec3 gi\u1ea3i \u0111i\u1ec1u ch\u1ebf m\u1ed9t t\u00edn hi\u1ec7u FSK?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb nh\u01b0 V\u00f2ng kh\u00f3a pha (Phase-Locked Loop \u2013 PLL) ho\u1eb7c m\u1ed9t t\u1eadp h\u1ee3p b\u1ed9 l\u1ecdc (filter bank). C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap b\u1ea1n \u0111\u1ecdc c\u00e1c thay \u0111\u1ed5i t\u1ea7n s\u1ed1 v\u00e0 chuy\u1ec3n ch\u00fang tr\u1edf l\u1ea1i th\u00e0nh d\u1eef li\u1ec7u s\u1ed1.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110i\u1ec1u ch\u1ebf FSK truy\u1ec1n d\u1eef li\u1ec7u s\u1ed1 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u cho m\u1ed7i bit, mang l\u1ea1i kh\u1ea3 n\u0103ng truy\u1ec1n th\u00f4ng \u0111\u00e1ng tin c\u1eady ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec5u.<\/p>","protected":false},"author":1,"featured_media":4163,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-4165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/comments?post=4165"}],"version-history":[{"count":4,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4165\/revisions"}],"predecessor-version":[{"id":11124,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/posts\/4165\/revisions\/11124"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media\/4163"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/media?parent=4165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/categories?post=4165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/vi\/wp-json\/wp\/v2\/tags?post=4165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}