请高人指点：调制与解调的本质是什么？ 请求高人指点，电缆调制解调器连接无线路由的设置方法，求大神。...
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解调: 在接收端将收到的数字频带信号还原成数字基带信号 .
时域定义
绛旓細鍦―MT璋冨埗瑙ｈ皟鎶鏈腑涓瀵归摐鍒剁數璇濈嚎涓0锝4kHz棰戞鐢ㄦ潵浼犺緭鐢佃瘽闊抽,鐢26kHz锝1.1MHz棰戞浼犻佹暟鎹,骞舵妸瀹冧互4KHz鐨勫搴﹀垝鍒嗕负25涓笂琛屽瓙閫氶亾鍜249涓笅琛屽瓙閫氶亾銆傝緭鍏ョ殑鏁版嵁缁忚繃姣旂壒鍒嗛厤鍜岀紦瀛樺彉涓烘瘮鐗瑰潡,鍐嶇粡TCM缂栫爜QAMM璋冨埗鍚庨佷笂瀛愰氶亾,鐞嗚涓婃瘡璧吂鍙互浼犺緭15bits鏁版嵁,鎵浠DSL鐨勭悊璁轰笂琛岄熷害涓25脳4脳15=1.5...
绛旓細鎯呭喌鎰挎剰寰堝锛屼絾鏄偍娌℃湁璇存竻妤氭偍鐨勮繛鎺ユ柟寮忥紝姣斿閫氳繃璺敱鍣ㄨ繕鏄洿鎺ラ氳繃璋冨埗瑙ｈ皟鍣ㄨ繛鎺ャ傝绠楁満涓殑缃戠粶杩炴帴鍙互鏈夊涓紝浣犳墍璇寸殑榛勮壊璀﹀憡鏍囪搴旇鏄湪绯荤粺鐣岄潰鍙充笅瑙掑嚭鐜扮殑缃戠粶杩炴帴璀﹀憡銆備竴鑸潵璇磋繖绉嶆儏鍐垫槸鏃犳硶鑾峰緱鍙敤IP鍦板潃閫犳垚鐨勶紝浣嗘槸涔熶笉涓瀹氬氨涓嶈兘姝ｅ父涓婄綉銆傚洜涓烘湁鍙兘娌℃湁鑾峰緱鍙敤IP鍦板潃鐨勮繛鎺ヤ笉...
绛旓細鍙兘椹卞姩绋嬪簭瀹夎閿欎簡锛屾崲涓涓纭殑椹卞姩绋嬪簭璇曡瘯銆傛垜浠ュ墠閬囧埌杩囪繖鏍风殑鎯呭喌锛屾槸涓鍙唴鐚紝涓嶇煡鏄粈涔堝搧鐗屽拰鍨嬪彿锛屽彧鐪嬩簡涓昏姱鐗囦笂鐨勫瀷鍙峰氨瀹夎浜嗕竴涓搴旈┍鍔紝浣嗗畨瑁呭ソ鍚庣湅涓婂幓娌℃湁闂锛屼絾鎷ㄥ彿灏卞嚭閿欍
绛旓細鐩存帴涓婇┍鍔ㄤ箣瀹朵笅杞戒竴涓憖.
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