¡¡¡¡C.BerrouµÈÈËÔÚ1993ÄêÊ×´ÎÌá³öÁËTurboÂëµÄ¸ÅÄî¡£TurboÂëʹÓÃÏà¶Ô¼òµ¥µÄRSCÂëºÍ½»Ö¯Æ÷¾ÍÄܵõ½½Ó½üÏÉÅ©¼«Ï޵ľÀ´íÐÔÄÜC.Berrou·¢±íµÄ·ÂÕæ½á¹ûÊÇ£¬±àÂëËÙÂÊR=1/2¡¢½»Ö¯³¤¶ÈΪ64KbitʱֻÐè0.7dB±ãÄܵõ½µÄBER£»¶ø¶ÔÓ¦R=1/2µÄÏÉÅ©¼«ÏÞÊÇ0.18dB£¬Ö»²îÔ¼0.5dB¡£
¡¡¡¡cdma2000ͬʱ²ÉÓÃÁ˾í»ýÂëºÍTurboÂëÁ½ÖÖ¾À´í±àÂë¡£ÔÚ¸ßËÙÂÊ¡¢¶ÔÒëÂëʱÑÓÒªÇ󲻸ߵĸ¨ÖúÊý¾ÝÁ´Â·ÖУ¬Ê¹ÓÃTurboÂëÒÔÀûÓÃÆäÓÅÒìµÄ¾À´íÐÔÄÜ¡£¿¼Âǵ½TurboÂëµÄÒëÂ븴ÔӶȴó¡¢ÒëÂëʱÑÓ´óµÄÔÒò£¬ÔÚÓïÒôºÍµÍËÙÂÊ¡¢¶ÔÒëÂëʱÑÓÒªÇó±È½Ï¿Á¿ÌµÄÊý¾ÝÁ´Â·ÖÐʹÓþí»ýÂ룬ÔÚÆäËûÂß¼ÐŵÀ£¨½ÓÈë¡¢¿ØÖÆ¡¢»ù±¾Êý¾Ý¡¢¸¨ÖúÂëÐŵÀ£©ÖÐÒ²¶¼Ê¹Óþí»ýÂë¡£ |
GMT+8, 2021-12-6 20:45
Powered by © 2011-2021www.shop-samurai.com°æȨËùÓÐÃâÔðÉùÃ÷²»Á¼ÐÅÏ¢¾Ù±¨
¼¼ÊõÇý¶¯Î´À´!µç¹¤Ñ§Ï°Íø¡ª×¨Òµµç¹¤»ù´¡ÖªÊ¶¡¢µç¹¤¼¼ÊõѧϰÍøÕ¾¡£
À¸Ä¿µ¼º½£º¹¤¿Ø¼ÒÔ°|ÈýÁâplc|Î÷ÃÅ×Óplc|Å·Ä·Áúplc|plcÊÓƵ½Ì³Ì