***
***
璁＄畻鏈?/p>
1
缃戠粶
绗竴绔?/p>
璁＄畻鏈虹綉缁滄璁?/p>
绗簩绔?/p>
鏁版嵁閫氫俊鎶�鏈?/p>
1
銆佸熀鏈蹇?/p>
锛?/p>
1
锛変俊鍙峰甫瀹姐�佷俊閬撳甫瀹斤紝淇″彿甯﹀瀵逛俊閬撳甫瀹界殑瑕佹眰
绛旓細淇″彿甯﹀鏄俊鍙锋墍鍗犳嵁鐨勯鐜囪寖鍥达紱
淇￠亾锛堥�氶锛夊甫瀹芥槸淇￠亾鑳藉閫氳繃鐨勪俊鍙风殑棰戠巼鑼?/p>
鍥?/p>
锛?/p>
淇″彿甯﹀瀵逛俊閬撳甫瀹界殑瑕佹眰锛?/p>
淇￠亾锛堥�氶锛夊甫瀹?/p>
>
淇″彿甯﹀銆?/p>
锛?/p>
2
锛夌爜鍏冧紶杈撻�熺巼涓庢暟鎹紶杈撻�熺巼姒傚康鍙婂叾鍏崇郴锛?/p>
绛旓細鐮佸厓浼犺緭閫熺巼锛堣皟鍒堕�熺巼銆佹尝鐗圭巼锛夋槸鏁版嵁淇″彿缁忚繃璋冨埗鍚庣殑浼犺緭閫熺巼锛岃〃绀烘瘡绉掍紶杈?/p>
澶氬皯鐢典俊鍙峰崟鍏冿紝鍗曚綅鏄尝鐗癸紱鏁版嵁浼犺緭閫熺巼锛堟瘮鐗圭巼锛夋槸姣忕浼犺緭浜岃繘鍒朵唬鐮佺殑浣嶆暟锛屽崟
浣嶆槸
b/s
鎴?/p>
bps
锛涗袱鑰呯殑鍏崇郴锛氭瘮鐗圭巼锛濇尝鐗圭巼
脳
log2N
锛?/p>
N
涓虹數鑴夊啿淇″彿鎵�鏈夊彲鑳界殑鐘舵�併�?/p>
锛?/p>
3
锛変俊閬撳閲忎笌鏁版嵁甯﹀
绛旓細淇￠亾瀹归噺鏄俊閬撶殑鏈�澶ф暟鎹紶杈撻�熺巼锛?/p>
淇￠亾甯﹀
W
鏄俊閬撹兘澶熼�氳繃鐨勪俊鍙风殑棰戠巼鑼冨洿锛?/p>
鐢变粙璐ㄧ殑璐ㄩ噺銆佹�ц兘鍐冲畾銆?/p>
锛?/p>
4
锛夋暟瀛椾俊鍙风殑浼犺緭鏂瑰紡銆佹ā鎷熶俊鍙风殑浼犺緭鏂瑰紡
绛旓細鏁板瓧淇″彿浼犺緭
:
鏁版嵁閫氫俊
1
锛夋暟
/
妯¤浆鎹?/p>
-->
妯℃嫙閫氫俊绯荤粺
-->
妯?/p>
/
鏁拌浆鎹?/p>
2
锛夌洿鎺ラ�氳繃鏁板瓧閫氫俊绯荤粺浼犺緭
妯℃嫙淇″彿浼犺緭
1
锛夋ā鎷熼�氫俊锛氱洿鎺ラ�氳繃妯℃嫙閫氫俊绯荤粺
2
锛夋暟瀛楅�氫俊
:
妯?/p>
/
鏁拌浆鎹?/p>
-->
鏁板瓧閫氫俊绯荤粺
-->
鏁?/p>
/
妯¤浆鎹?/p>
2
銆佸父鐢ㄧ殑澶氳矾澶嶇敤鎶�鏈湁鍝簺锛熸椂鍒嗗鐢ㄤ笌缁熻澶嶇敤鎶�鏈殑涓昏鍖哄埆鏄粈涔堬紵
绛旓細甯哥敤鐨勫璺鐢ㄦ妧鏈湁绌哄垎澶氳矾澶嶇敤
SDM
銆侀鍒嗗璺鐢?/p>
FDM
銆佹椂鍒嗗璺鐢?/p>
TDM
鍜屾尝鍒嗗璺鐢?/p>
WDM
锛?/p>
鏃跺垎澶嶇敤涓庣粺璁″鐢ㄦ妧鏈殑涓昏鍖哄埆鏄細
鏃跺垎澶氳矾澶嶇敤锛?/p>
1
锛夋椂闅欏浐瀹氬垎閰嶇粰鏌愪竴绔彛
2
锛夌嚎璺腑瀛樺湪绌洪棽鐨勬椂闅?/p>
缁熻鏃跺垎澶氳矾澶嶇敤锛堟寜鎺掗槦鏂瑰紡鍒嗛厤淇￠亾锛?/p>
锛?/p>
1
锛夊抚鐨勯暱搴﹀浐瀹?/p>
2
锛夋椂闅欏彧鍒嗛厤缁欓渶瑕佸彂閫佺殑杈撳叆绔?/p>
3
銆佹帉鎻?/p>
T1
鍜?/p>
E1
淇￠亾鐨勫甫瀹借绠楁柟娉曘�?/p>
绛旓細
姣忎竴涓彇鏍峰�肩敤
8
浣嶄簩杩涘埗缂栫爜浣滀负涓�涓瘽璺紝鍒?/p>
24
璺數璇濆鐢ㄥ悗
T1
鏍囧噯鐨勪紶杈?/p>
姣旂壒鐜囦负澶氬皯锛?/p>
8000
脳
(8
脳
24+1)=1544000b/s
E1
鏍囧噯鏄?/p>
32
璺鐢紙娆ф床鏍囧噯锛変紶杈撴瘮鐗圭巼涓哄灏戯紵
8000
脳
(8
脳
32)= 2048000bps
4
銆佹瘮杈冪數璺氦鎹€�佹姤鏂囦氦鎹€�佸垎缁勪氦鎹㈢殑鏁版嵁鎶ユ湇鍔°�佸垎缁勪氦鎹㈢殑铏氱數璺湇鍔＄殑浼樼己鐐癸紵