ÎÊÌâÒÑ¿ªÆô (ÆÕͨÎÊÌâ)
ÖªµÀÐźÅËÙÂÊÔõô¼ÆËãÀ©ÆµÔöÒæ
¼ÙÉèCDMAϵͳµÄÔ´ÐźÅËÙÂÊΪ9.6Kbps£¬ÔòϵͳµÄÀ©ÆµÔöÒæΪ21dB£¬ÕâÊÇÔõô¼ÆËã³öÀ´µÄ°¡£¿
ÌáÎÊÕß: 3196777  ÌáÎÊʱ¼ä: 2009-11-03    
 
  ÎÒÒª»Ø´ð£º
 

  ÇëÏÈ µÇ¼ »ò ×¢²á ÔٻشðÎÊÌâ

¸ü¶à ËÙÂÊ ¼ÆËã ÔöÒæ ÐźŠÀ©Æµ Ïà¹ØÎÊÌâ
ÎÊÌâ´ð°¸ ( 1 )

À©ÆµÔöÒæ=10Lg(2.3M/9.6K)=21dB
¾ßÌåµÄº¬Òå¿ÉÒÔ²éÕÒÏà¹Ø×ÊÁÏ
²21f3dK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ

»Ø´ðÕߣº herdkid     »Ø´ðʱ¼ä£º2009-11-03 17:05    

27        32        
ÎÒÓÃÄãÄǸö¹«Ê½¼ÆËã³öÀ´ÔõôÊÇ23.79°¡£¿
3196777  2009-11-04 14:48 

»Ø´ðʱ¼ä:09-11-03 17:05 
´Ë´ð°¸µÃµ½1´ÎÆÀÂÛ
3196777 ÆÀÂÛ
ÎÒÓÃÄãÄǸö¹«Ê½¼ÆËã³öÀ´ÔõôÊÇ23.79°¡£¿
ÄãÈçºÎ¼ÆËãµÄÄØ£¿ÔõôËã³ö23.79°¡£¬Ì«Ç¿ÁË£¬ÔÙϸϸËãÏ°¡
  2009-12-18 11:54 


  2010-03-21 15:44 

À©ÆµÔöÒæ=Bc/Rb=1.2288M/9.6k
È»ºóÈ¡10µÄ¶ÔÊý¾ÍÐÐÁË
  2010-08-12 14:18 


ÖйúͨÐÅÈ˲ÅÍø | ½­ËÕͨÐÅÈ˲ÅÍø | ɽ¶«Í¨ÐÅÈ˲ÅÍø | Î人ͨÐÅÈ˲ÅÍø | Õ㽭ͨÐÅÈ˲ÅÍø | ºþÄÏͨÐÅÈ˲ÅÍø
ÖØÇìÐÅ¿ÆͨÐŹ¤³ÌÓÐÏÞ¹«Ë¾ Ƹ£ºÒƶ¯Í¨ÐÅÎÞÏßÍøÂçÓÅ»¯¹¤³Ìʦ
ÐèÇóÈËÊý£º10 ÈË µØµã£º¹óÖÝÊ¡,ËÄ´¨Ê¡,Î÷°²ÊÐ,ÔÆÄÏÊ¡,½­Î÷Ê¡
ÄϾ©·½¶«Í¨ÐÅϵͳ¹¤³ÌÓÐÏÞ¹«Ë¾ Ƹ£ººǫ́Öм¶ÓÅ»¯¹¤³Ìʦ£¨ËÄ´¨£©
ÐèÇóÈËÊý£º3 ÈË µØµã£º°ÍÖÐÊÐ,´ïÖÝÊÐ,¹ãÔªÊÐ
±±¾©µçÆìͨѶ¼¼Êõ¹É·ÝÓÐÏÞ¹«Ë¾ Ƹ£ºÍøÓÅʵϰÉúͨÐÅÓ¦½ìÉú£¨ÔÆÄÏ£©
ÐèÇóÈËÊý£º1 ÈË µØµã£ºÀ¥Ã÷ÊÐ,˼éÊÐ,ÕÑͨÊÐ
¸£½¨Ê¡ºè¹ÙͨÐŹ¤³ÌÓÐÏÞ¹«Ë¾ Ƹ£ºÍøÓÅרÏîºǫ́-Öи߼¶
ÐèÇóÈËÊý£º9 ÈË µØµã£ºÀ¼ÖÝÊÐ,¼ÎÓø¹ØÊÐ,ÕÅÒ´ÊÐ,¾ÆȪÊÐ
¼Î»·¿Æ¼¼¹É·ÝÓÐÏÞ¹«Ë¾ Ƹ£º²âÊÔ¹¤³Ìʦ
ÐèÇóÈËÊý£º15 ÈË µØµã£ºÀ¥Ã÷ÊÐ,ÁÙ²×ÊÐ,µÂºêÖÝ,ºìºÓÖÝ,ÓñϪÊÐ
º¼Öݶ«ÐÅÍøÂç¼¼ÊõÓÐÏÞ¹«Ë¾ Ƹ£º²×ÖÝ-¸ß/ÖÐ/³õ¼¶-ÍøÓŹ¤³Ìʦ
ÐèÇóÈËÊý£º30 ÈË µØµã£º²×ÖÝÊÐ
±±¾©ÒËͨ»ªÈð¿Æ¼¼ÓÐÏÞ¹«Ë¾ Ƹ£ºÇåÔ¶ÊÐÒƶ¯»ªÎª4/5Gϵͳר¼Ò¼¶
ÐèÇóÈËÊý£º1 ÈË µØµã£ºÇåÔ¶ÊÐ
³É¶¼ÆìѶͨÐż¼ÊõÓÐÏÞ¹«Ë¾ Ƹ£ºÄÏÄþ/ÎàÖÝ/±±º£ÕÐͶËß²âÊÔ¡¢ºǫ́
ÐèÇóÈËÊý£º12 ÈË µØµã£ºÄÏÄþÊÐ,ÎàÖÝÊÐ,±±º£ÊÐ,ºÓ³ØµØÇø,ÁøÖÝÊÐ
¹ãÖÝÐÀÍøͨÐż¼ÊõÓÐÏÞ¹«Ë¾ Ƹ£ºÍ¨ÐŹ¤³ÌÏîÄ¿¾­Àí
ÐèÇóÈËÊý£º2 ÈË µØµã£ºÉîÛÚÊÐ,¶«Ý¸ÊÐ
ÄϾ©ÐÀÍøͨÐſƼ¼¹É·ÝÓÐÏÞ¹«Ë¾ Ƹ£ºÍøÓŹ¤³Ìʦ£¨¸ß¼¶£©
ÐèÇóÈËÊý£º2 ÈË µØµã£ºÌ©ÖÝÊÐ,Õò½­ÊÐ
ÈȵãÎÊÌâ
¸ü¶à¾«²Ê

ÁªÏµÎÒÃÇ - ÎÊͨÐÅר¼Ò Powered by MSCBSC Òƶ¯Í¨ÐÅÍø  © 2006 -