鎽� 瑕�锛氭暩(sh霉)瀛椾笅璁婇牷鎶€琛�(sh霉)鍦ㄨ粺浠剁劇绶氶浕涓湁钁楀唬娉涚殑鎳�(y墨ng)鐢�锛屼粙绱逛簡涓€绋娇鐢ㄦ暩(sh霉)瀛椾笅璁婇牷鍣℉sp50214瀵�(sh铆)鐝�(xi脿n)涓牷杌熶欢鐒＄窔闆绘帴鏀舵(j墨)鐨勮ō(sh猫)瑷�(j矛)銆傝┎绯荤当(t菕ng)鍏锋湁寰炰俊铏熺殑鏁�(sh霉)瀛楀寲锛屼笅璁婇牷锛屽悓姝�锛屽埌瑙ｈ(di脿o)鐨勫姛鑳斤紝鍏锋湁涓€瀹氱殑瀵�(sh铆)鐢ㄦ€�銆� 闂�(gu膩n)閸佃锛氳粺浠剁劇绶氶浕锛涘彲绶ㄧ▼鏁�(sh霉)瀛椾笅璁婇牷鍣紱鍙法绋嬫暩(sh霉)瀛楅帠鐩哥挵(hu谩n)锛涙暩(sh霉)瀛椾俊铏熻檿鐞嗗櫒 [b][align=center]Software Radio Receiver based on DigitaI Downconverter Hsp50214 LIU Yi锛孎(xi脿n)U Feng鈥攍in锛孡I Chao 锛圕ollege ofCommunication Engineering锛孹idian University锛孹ifin 710071锛孋hina锛塠/align][/b] Abstract锛�Downconverting technology has been widely used in software radio锛嶵his paperintroduces a kind of software radio receiver that using digital downconverter Hsp502 14锛嶵his system has the capacity of changing signal from analog to digital锛宒ownconverting锛宻ynchronization锛宎nd demodulation锛嶪t has practi鈥攃ality锛� Key words锛�Software radio锛汸rogrammable downconverter device锛汥SP锛� 1 寮� 瑷€ 杌熶欢鐒＄窔闆诲彲浠ヨ鏄劇绶氶€氫俊鎶€琛�(sh霉)鍙蹭笂鐨勭涓夋闈╁懡锛屽畠鏄竴绋珮搴︽暩(sh霉)瀛楀寲锛屽畬鍏ㄥ彲绶ㄧ▼锛屽姛鑳芥摯(ku貌)鍏呮柟渚跨殑閫氫俊绯荤当(t菕ng)銆傚畠鐨勬牳蹇冩€濇兂鏄娇A锛廌锛孌锛廇杞�(zhu菐n)鎻涘櫒鐩″彲鑳介潬杩戝ぉ绶�锛岀洝鍙兘鏃╃殑灏囨ā鎿俊铏熸暩(sh霉)瀛楀寲锛屼互渚夸俊铏熺殑鐢�(ch菐n)鐢�銆佽(di脿o)鍒躲€佺法纰�銆佽В纰�銆佽В瑾�(di脿o)绛夊姛鑳介兘鑳介€氶亷鏁�(sh霉)瀛椾俊铏熻檿鐞嗗櫒锛圖SP锛変締瀹屾垚銆傞€欐ǎ鍋氶€氬父鏈変竴鍊嬪晱椤�锛屽皪淇¤櫉鐨勯噰妯ｉ€氬父鍦ㄤ腑闋讳互涓婏紝寰炶€屼娇閲囨ǎ鍚庣殑淇¤櫉涓€鑸湪骞惧崄MHz浠ヤ笂锛岄€欎娇寰椾竴鑸殑DSP灏嶉€欐ǎ楂橀€熺殑鏁�(sh霉)瀛椾俊铏熺殑铏曠悊椤緱鎹夎瑕嬭倶銆傚皪寰呴€欎竴鍟忛锛屼汉鍊戦噰鐢ㄧ殑瑙ｆ焙杈︽硶鏄�锛岄鍏堝皪A锛廌杓稿嚭鐨勯珮閫熸暩(sh霉)瀛楅噰妯ｄ俊铏熼€�(j矛n)琛屼笅璁婇牷锛屼娇鍏惰畩?y艒u)姒堥€€淇惧疄骞曢稅顬洏?锛岄€欐ǎ鏈冧娇DSP铏曠悊璧蜂締璁婂緱娓稿垉鏈変綑銆� [b][align=center]瑭崇窗(x矛)鍏�(n猫i)瀹硅珛榛�(di菐n)鎿婏細 鍩轰簬鏁�(sh霉)瀛椾笅璁婇牷鍣℉sp50214鐨勮粺浠剁劇绶氶浕鎺ユ敹姗�(j墨)[/align][/b]