1
鎴愰兘鐞嗗伐澶у瀹為獙鎶ュ憡
璇剧▼鍚嶇О锛?/p>
鏁板瓧閫氫俊鍘熺悊
濮撳悕锛?/p>
__________________
瀛﹀彿锛?/p>
______________
鎴愮哗锛?/p>
____
___
瀹為獙涓?/p>
Matlab
鐨勬暟瀛楄皟鍒剁郴缁熶豢鐪熷疄楠岋紙鍙傝�冿級
1
鏁板瓧璋冨埗绯荤粺鐨勭浉鍏冲師鐞?/p>
鏁板瓧璋冨埗鍙互鍒嗕负浜岃繘鍒惰皟鍒跺拰澶氳繘鍒惰皟鍒讹紝
澶氳繘鍒惰皟鍒舵槸浜岃繘鍒惰皟鍒剁殑鎺ㄥ箍锛?/p>
涓昏璁ㄨ浜岃繘鍒剁殑璋冨埗涓庤В璋冿紝绠�鍗曡璁轰竴涓嬪杩涘埗璋冨埗涓殑宸垎鐩镐綅閿帶璋冨埗
锛?/p>
M-DPSK
锛夈�?/p>
鏈�甯歌鐨勪簩杩涘埗鏁板瓧璋冨埗鏂瑰紡鏈変簩杩涘埗鎸箙閿帶
锛?/p>
2-ASK
锛?/p>
銆?/p>
绉婚閿帶
锛?/p>
2-FSK
锛?/p>
鍜岀Щ鐩搁敭鎺э紙
2-PSK
鍜?/p>
2-DPSK
锛夈�備笅闈㈡槸杩欏嚑绉嶈皟鍒舵柟寮忕殑鐩稿叧鍘熺悊銆?/p>
1.1
浜岃繘鍒跺箙搴﹂敭鎺э紙
2-ASK
锛?/p>
骞呭害閿帶鍙互閫氳繃涔樻硶鍣ㄥ拰寮�鍏崇數璺潵瀹炵幇銆傝浇娉㈠湪鏁板瓧淇″彿
1
鎴?/p>
0
鐨勬帶鍒朵笅
閫氭垨鏂紝鍦ㄤ俊鍙蜂负
1
鐨勭姸鎬佽浇娉㈡帴閫氾紝姝ゆ椂浼犺緭淇￠亾涓婃湁杞芥尝鍑虹幇锛涘湪淇″彿涓?/p>
0
鐨?/p>
鐘舵�佷笅锛岃浇娉㈣鍏虫柇锛屾鏃朵紶杈撲俊閬撲笂鏃犺浇娉紶閫併�傞偅涔堝湪鎺ユ敹绔垜浠氨鍙互鏍规嵁
杞芥尝鐨勬湁鏃犺繕鍘熷嚭鏁板瓧淇″彿鐨?/p>
1
鍜?/p>
0
銆?/p>
骞呯Щ閿帶娉?/p>
(ASK)
鐨勮浇娉㈠箙搴︽槸闅忕潃璋冨埗淇″彿鑰屽彉鍖栫殑锛?/p>
鍏舵渶绠�鍗曠殑褰㈠紡鏄紝
杞芥尝鍦ㄤ簩杩涘埗璋冨埗淇″彿鎺у埗涓嬮�氭柇锛?/p>
姝ゆ椂鍙堝彲绉颁綔寮�鍏抽敭鎺ф硶
(OOK)
銆?/p>
澶氱數骞?/p>
MASK
璋冨埗鏂瑰紡鏄竴绉嶆瘮杈冮珮鏁堢殑浼犺緭鏂瑰紡锛屼絾鐢变簬瀹冪殑鎶楀櫔澹拌兘鍔涜緝宸紝灏ゅ叾鏄?/p>
鎶楄“钀界殑鑳藉姏涓嶅己锛屽洜鑰屼竴鑸彧閫傚疁鍦ㄦ亽鍙備俊閬撲笅閲囩敤銆?/p>
2-ASK
淇″彿鍔熺巼璋卞瘑搴︾殑鐗圭偣濡備笅锛?/p>
锛?/p>
1
锛夌敱杩炵画璋卞拰绂绘暎璋变袱閮ㄥ垎鏋勬垚锛涜繛缁氨鐢变紶鍙风殑娉㈠舰
g(t)
缁忕嚎鎬ц皟鍒跺悗鍐?/p>
瀹氾紝绂绘暎璋辩敱杞芥尝鍒嗛噺鍐冲畾锛?/p>
锛?/p>
2
锛夊凡璋冧俊鍙风殑甯﹀鏄熀甯﹁剦鍐叉尝褰㈠甫瀹界殑浜屽�嶃�?/p>
1.2
浜岃繘鍒堕绉婚敭鎺э紙
2-FSK
锛?/p>
鏁板瓧棰戠巼璋冨埗鍙堢О棰戠Щ閿帶锛?/p>
FSK
锛夛紝浜岃繘鍒堕绉婚敭鎺ц浣?/p>
2FSK
銆傛暟瀛楅绉婚敭
鎺ф槸鐢ㄨ浇娉㈢殑棰戠巼鏉ヤ紶閫佹暟瀛楁秷鎭紝鍗崇敤鎵�浼犻�佺殑鏁板瓧娑堟伅鎺у埗杞芥尝鐨勯鐜囥�?/p>
2FSK