閫氫俊鍘熺悊澶嶄範棰?/p>
浜斻�佷綔鍥鹃
1
锛庢煇璋冨埗鏂规鍥惧鍥?/p>
a
鎵�绀恒�傚凡鐭?/p>
m(t)
鐨勯璋卞鍥?/p>
b
锛岃浇棰?/p>
涓旂悊鎯冲甫閫氭护娉㈠櫒鐨勫甫瀹戒负銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夌悊鎯冲甫閫氭护娉㈠櫒鐨勪腑蹇冮鐜囦负澶氬皯锛?/p>
锛?/p>
2
锛夎鏄?/p>
s(t)
涓轰綍绉嶅凡璋冨埗淇″彿锛?/p>
锛?/p>
3
锛夌敾鍑?/p>
s(t)
鐨勯璋卞浘銆?/p>
2
锛庢牴鎹鍥炬墍绀虹殑璋冨埗淇″彿娉㈠舰锛岃瘯鐢诲嚭
DSB
鍙?/p>
AM
娉㈠舰鍥撅紝骞舵瘮杈冨畠浠垎鍒�氳繃鍖呯粶妫�娉㈠櫒鍚庣殑娉㈠舰宸埆銆?/p>
3
锛庤鐢诲嚭閲囩敤鍗曡竟甯﹁皟骞呯殑璋冨埗鍣ㄥ拰瑙ｈ皟鍣ㄧ殑缁勬垚妗嗗浘锛熻嫢鍩哄甫淇″彿鐨勯璋卞鍥炬墍绀猴紝杞芥尝棰戠巼涓?/p>
64kHz
锛屽彇涓嬭竟甯︼紙婊ゆ尝涓虹悊鎯筹級
锛岃鐢诲嚭宸茶皟淇?
鍙风殑棰戣氨锛?/p>
4
锛庤嫢鏈?/p>
5
涓璋辫寖鍥村潎涓?/p>
60kHz
锝?/p>
108kHz
鐨勪俊鍙凤紙宸插寘鎷槻鎶ら甯︼級
锛岀幇灏嗚繖
5
涓俊鍙烽噰鐢ㄩ鍒嗗鐢ㄧ殑鏂瑰紡鍚堟垚涓�涓璋变负
312kHz
锝?/p>
552kHz
鐨勪俊鍙枫�?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夊搴斾簬杩?/p>
5
涓俊鍙锋墍鐢ㄧ殑杞芥尝棰戠巼鍒嗗埆涓哄灏戯紙鍙栦笂杈瑰甫锛?/p>
锛?/p>
锛?/p>
2
锛夌敾鍑鸿棰戝垎澶嶇敤鐨勫師鐞嗘鍥撅紱
锛?/p>
3
锛夎瘯鐢诲嚭棰戣氨鎼Щ鍥俱�?/p>
5
锛?/p>
璁炬湁
12
璺數璇濅俊鍙凤紝
姣忚矾鐢佃瘽鐨勫甫瀹戒负
4kHz
锛?/p>
棰戣氨
0kHz
锝?/p>
4kHz
锛?/p>
宸插寘鎷槻鎶ら甯︼級
锛?/p>
鐜板皢杩?/p>
12
璺數璇濅俊鍙烽噰鐢ㄩ鍒嗗鐢ㄧ殑鏂瑰紡鍚堟垚涓�涓璋变负
60Hz
锝?
108kHz
鐨勪俊鍙枫�?/p>
璇曢棶锛?/p>
锛?/p>
1
锛夌敤浜?/p>
12
璺數璇濋璋辨惉绉荤殑杞芥尝棰戠巼鍒嗗埆涓哄灏?/p>
(
鍙栦笂杈瑰甫
)
锛?/p>
锛?/p>
2
锛夌敾鍑洪鍒嗗鐢ㄧ殑棰戣氨鎼Щ鍥撅紙
4kHz
鐨勭數璇濋璋辩敤涓夎棰戣氨琛ㄧず锛?/p>
銆?/p>
6
锛庤閫氫俊绯荤粺鐨勬ā鍨嬪涓嬪浘鎵�绀猴紝璇峰湪鍥句腑鏍囧嚭璋冨埗淇￠亾鍜岀紪鐮佷俊閬撱�傝鐢诲嚭涓�瀵硅緭鍏ュ拰涓�瀵硅緭鍑烘椂鐨勮皟鍒朵俊閬撴暟瀛︽ā鍨嬪浘鍜屼簩杩涘埗缂栫爜淇￠亾鏁板
妯″瀷鍥俱�?/p>
7
锛庤鏈変笁绉嶄紶杈撻�氶亾鍒嗗埆濡傚浘
a
銆佸浘
b
鍜屽浘
c
鎵�绀恒�?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夌敾鍑鸿繖涓夌浼犺緭閫氶亾鐨勫箙棰戠壒鎬хず鎰忓浘锛?/p>
锛?/p>
2
锛夊氨澶辩湡闂瀵逛笁绉嶄紶杈撻�氶亾浣滅畝瑕佽璁猴紱
锛?/p>
3
锛夎嫢涓夌浼犺緭閫氶亾鐨勮緭鍏ヤ负涓�涓煩褰㈣剦鍐诧紝璇峰垎鍒敾鍑虹浉搴旂殑杈撳嚭娉㈠舰鑽夊浘銆?/p>
8
锛庤鏈変竴鏁板瓧搴忓垪涓?/p>
01
锛岃鐢诲嚭鐩稿簲鐨勫崟鏋佹�ч潪褰掗浂鐮侊紙
NRZ
锛?/p>
銆佸綊闆剁爜锛?/p>
RZ
锛?/p>
銆佸樊鍒嗙爜鍜屽弻鏋佹�у綊闆剁爜鐨勬尝褰€�?/p>
9
锛庤鏈変竴鏁板瓧搴忓垪涓?/p>
01
锛岃鐢诲嚭鐩稿簲鐨?/p>
NRZ
鐮併�?/p>
RZ
鐮併�佸弻鏋佹�у綊闆剁爜銆?/p>
AMI
鐮佸拰鍥涚數骞崇爜鐨勬尝褰€�?/p>
10
锛庤鏈変竴鏁板瓧鐮佸簭鍒椾负
0000000001
锛岃瘯缂栦负鐩稿叧鐮併�?/p>
AMI
鐮佸拰
HDB
3
鐮侊紵骞剁敾鍒嗗埆鍑虹紪鐮佸悗鐨勬尝褰紵锛堢涓�涓潪闆剁爜缂栦负
-1
锛?/p>
11
锛庤閮ㄥ垎鍝嶅簲浼犺緭绯荤粺濡傚浘鎵�绀猴紝鑻?/p>
涓恒�傝鐢诲嚭鍚勭偣鐨勬尝褰€�?/p>
12
锛庤鐢诲嚭鐪煎浘鐨勬ā鍨嬬粨鏋勫浘锛屽苟瑙ｉ噴涓儴鍒嗘墍浠ｈ〃鐨勫惈涔夈�?/p>
13
锛庤鍙戦�佹暟瀛椾俊鎭簭鍒椾负锛岀爜鍏冮�熺巼涓恒�傜幇閲囩敤
2FSK
杩涜璋冨埗锛屽苟璁?/p>
瀵瑰簲
鈥?鈥?/p>
锛涘搴?/p>
鈥?鈥?/p>
锛?/p>
銆佺殑鍒濆鐩镐綅涓?/p>
0
0
銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夌敾鍑?/p>
2FSK
淇″彿鐨勬尝褰€�?/p>
锛?/p>
2
锛夎绠?/p>
2FSK
淇″彿鐨勫甫瀹藉拰棰戣氨鍒╃敤鐜囥�?/p>
14
锛庤鍙戦�佹暟瀛椾俊鎭簭鍒椾负锛岀爜鍏冮�熺巼涓?/p>
銆傜幇閲囩敤
2FSK
杩涜璋冨埗锛屽苟璁?/p>
瀵瑰簲
鈥?鈥?/p>
锛涘搴?/p>
鈥?鈥?/p>
锛?/p>
銆佺殑鍒濆鐩镐綅涓?/p>
0
0
銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夌敾鍑?/p>
2FSK
淇″彿鐨勬尝褰€�?/p>
锛?/p>
2
锛夎绠?/p>
2FSK
淇″彿鐨勫甫瀹藉拰棰戣氨鍒╃敤鐜囥�?/p>
15
锛庤浜岃繘鍒?/p>
FSK
淇″彿涓?/p>
涓旂瓑鍙兘鍑虹幇銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夋瀯鎴愮浉鍏虫娴嬪櫒褰㈠紡鐨勬渶浣虫帴鏀舵満缁撴瀯锛?/p>
锛?/p>
2
锛夌敾鍑哄悇鐐瑰彲鑳界殑宸ヤ綔娉㈠舰锛?/p>
锛?/p>
3
锛夎嫢鎺ユ敹鏈鸿緭鍏ラ珮鏂櫔澹板姛鐜囪氨瀵嗗害涓?/p>
锛岃瘯姹傜郴缁熺殑璇爜鐜囥�?/p>
16
锛庡亣璁炬湁鏌?/p>
2DPSK
绯荤粺锛岃鍙戦�佹暟瀛椾俊鎭簭鍒椾负
1
锛岀爜鍏冮�熺巼涓?/p>
锛岃浇娉㈤鐜囦负銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夎瘯鐢诲嚭
2DPSK
淇″彿娉㈠舰锛?/p>
锛?/p>
2
锛夎瘯鐢诲嚭閲囩敤闈炵浉骞茶В璋冩硶鎺ユ敹鐨勭粍鎴愭鍥撅紱
锛?/p>
3
锛夋牴鎹鍥捐瘯鐢诲嚭瑙ｈ皟绯荤粺鐨勫悇鐐规尝褰€�?/p>
17
锛庤鏁板瓧搴忓垪涓?/p>
0
锛屾尝鐗逛负
1000B
锛岃浇娉㈤鐜囦负
2000Hz
銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夌敾鍑虹浉搴斿緱
2DPSK
鐨勬尝褰紱
锛?/p>
2
锛夌敾鍑?/p>
2DPSK
浼犺緭绯荤粺鐨勯潪绾挎�у彉鎹?/p>
+
婊ゆ尝娉曡浇娉㈠悓姝ョ殑缁勬垚妗嗗浘锛?/p>
锛?/p>
3
锛夌敾鍑轰互涓婄粍鎴愭鍥句腑鍚勭偣鐨勬尝褰㈠浘銆?/p>
18
锛庤鍙戦�佹暟瀛椾俊鎭簭鍒椾负
0
锛岀爜鍏冮�熺巼涓猴紝杞芥尝棰戠巼涓?/p>
4kHz
銆?/p>
璇曟眰锛?/p>
锛?/p>
1
锛夊垎鍒敾鍑?/p>
2ASK
銆?/p>
2PSK
銆?/p>
2DPSK
淇″彿鐨勬尝褰紙
2ASK
鐨勮鍒欙細
鈥?鈥?/p>
鏈夎浇娉€�?/p>
鈥?鈥?/p>
鏃犺浇娉紱
2PSK
鐨勮鍒欙細
鈥?鈥?/p>
涓?/p>
0
0
銆?/p>
鈥?鈥?/p>
涓?/p>
180
0
锛?/p>
2DPSK
鐨勮鍒欙細
鈥?鈥?/p>
鍙?/p>
鈥?鈥?/p>
涓嶅彉锛屼笖璁剧浉瀵圭爜鍙傝�冪爜鍏冧负
鈥?鈥?/p>
锛?/p>
銆?/p>
锛?/p>
2
锛夎绠?/p>
2ASK
銆?/p>
2PSK
銆?/p>
2DPSK
淇″彿鐨勫甫瀹藉拰棰戣氨鍒╃敤鐜囥�?/p>
19
锛庡凡鐭ヤ竴浣庨�氫俊鍙?/p>
鐨勯璋变负
璇曟眰锛?/p>
锛?/p>
1
锛夊亣璁句互鐨勯�熺巼瀵硅繘琛岀悊鎯虫娊鏍凤紝璇曠敾鍑哄凡鎶芥牱淇″彿鐨勯璋辫崏鍥撅紱
锛?/p>
2
锛夎嫢鐢?/p>
鐨勯�熺巼鎶芥牱锛岄噸鍋氫笂棰橈紱