ÎÊÌâÒÑ¿ªÆô
(ÆÕͨÎÊÌâ)
1.ʲô½Ð×öÈõ¸²¸Ç£¬Èõ¸²¸ÇÓëÐźŲ»ºÃÓÐʲôÇø±ð£¿2.ʲôÑùµÄ½Ð×öÁÚÇø©Å䣿3.Ôõô¿´Ð¡ÇøÈÅÂëÓÐûÓÐ×öÇл»£¿
ÌáÎÊÕß: hoshai ÌáÎÊʱ¼ä: 2012-12-09
• ÎÞÖ÷µ¼Ð¡ÇøÓÐÄÄЩ½â¾ö·½·¨£¿ 2009-10-26
• °®Á¢ÐÅ£¬RBS3206,СÇøÅäÖá¡¡°RB1¡±´ú±íʲôÒâ˼£¿ 2009-10-26
• ijСÇøµÄÎÞÏßÁ´Â·Ê§°Üµô»°ÓëÇл»µô»°Í¬Ê±Ôö¼Ó 2009-10-26
• Çë½ÌÒ»¸ö»ªÐÇСÇø±íµÄÖÆ×÷µÄÎÊÌâ 2009-10-26
• СÇøÖØÑ¡ÖͺóÖµ£¨CRH£© 2009-10-25
• Çë½ÌÊý¾ÝÓµÈûСÇø¼ÆËãÐèµ÷ÕûµÄcded,cdefµÄ´óС? 2009-10-22
• СÇø¼ä·Öµ£»°ÎñÁ¿µÄ·½·¨¾ßÌåÓÐÄÄЩ£¿ 2009-10-22
• GSM 10MHZ 4¸öСÇø¸´ÓÃÏÂÿ¸öСÇøµÄÒµÎñÐŵÀºÍ¿ØÖÆÐŵÀµÄÊýÁ¿ 2009-10-21
• °®Á¢ÐÅ£¬RBS3206,СÇøÅäÖá¡¡°RB1¡±´ú±íʲôÒâ˼£¿ 2009-10-26
• ijСÇøµÄÎÞÏßÁ´Â·Ê§°Üµô»°ÓëÇл»µô»°Í¬Ê±Ôö¼Ó 2009-10-26
• Çë½ÌÒ»¸ö»ªÐÇСÇø±íµÄÖÆ×÷µÄÎÊÌâ 2009-10-26
• СÇøÖØÑ¡ÖͺóÖµ£¨CRH£© 2009-10-25
• Çë½ÌÊý¾ÝÓµÈûСÇø¼ÆËãÐèµ÷ÕûµÄcded,cdefµÄ´óС? 2009-10-22
• СÇø¼ä·Öµ£»°ÎñÁ¿µÄ·½·¨¾ßÌåÓÐÄÄЩ£¿ 2009-10-22
• GSM 10MHZ 4¸öСÇø¸´ÓÃÏÂÿ¸öСÇøµÄÒµÎñÐŵÀºÍ¿ØÖÆÐŵÀµÄÊýÁ¿ 2009-10-21
ÎÊÌâ´ð°¸
( 12 )
Èõ¸²¸ÇÊÇͨÐÅרҵÓÃÓ¾ÍÊÇÔÚij¸öµØ·½ÖÜΧÎÞ»ùÕ¾Äܸ²¸Çµ½£¬ÔÚÄãÊÖ»úÉÏÏÔʾÐźŸñÊýºÜµÍ£¬»òÕßÖ»ÄܽøÐнô¼±ºô½ÐÁË¡£ÎÒÃdzÆΪÈõ¸²¸Ç£¬ÐźŲ»ºÃÆäʵÊÇÒ»°ãÓû§ËµµÄ£¬Óû§Ò»°ã´òµç»°ÓÐÎÊÌ⣬ͳ³ÆµÄÐźŲ»ºÃ£¬°üÀ¨Òò¸ß¸ÉÈÅ°¡£¬Èõ¸²¸Ç°¡£¬µ¥Í¨°¡£¬µÈµÈ£¬ËüÊÇÒ»¸öÁýͳµÄ¸ÅÄî¡£¶ÔÓÚÁÚÇø©Åä¾ÍÊÇÒò¸ÃÓÐÇл»¹ØϵµÄСÇø£¬Ã»ÓÐÌí¼ÓÁÚÇø¹Øϵ£¬µ¼ÖÂÎÞ·¨Çл»£¬ÕâÎÒÃǽÐÁÚÇø©Åä¡£µÚÈý¸öÎÊÌâÎÒû¿´Ã÷°×²»ºÃÒâ˼¡£
»Ø´ðÕߣº
317084852
»Ø´ðʱ¼ä£º2012-12-09 23:34
29 18
Èõ¸²¸ÇÒ»°ãÊÇÖ¸»ùÕ¾Ëù¸²¸ÇÃæ»ý¹ý´ó£¬»ùÕ¾¼ä¾à¹ý´ó£¬»òÕß½¨ÖþÎïÕÚµ²¶øµ¼Ö»ùÕ¾Ö®¼ä»òÕß»ùÕ¾±ß½çÇøÓòÐźŽÏÈõ¡£Èõ¸²¸ÇÒ»°ãµÄ¶¼ÊÇÖ¸ÊÖ»úµçƽÔÚRxlev<-90dBm¡£ÐźŲ»ºÃÊǶ෽ÃæÔÒò£ºÈõ¸²¸Ç¿ÉÄÜÐźŲ»ºÃ£»ÐźźÜÇ¿£¬µ«ÊÇͨ»°ÖÊÁ¿²î¡¢ÓиÉÈÅÒ²¿ÉÒÔ¶¨ÒåΪÐźŲ»ºÃ¡£2¸ö»òÕß2¸öÒÔÉϵÄСÇøÖ®¼äÐèÒª×öСÇøÇл»Êý¾Ý£¬·ñÔòÊÖ»úÔÚ´ÓÒ»¸öСÇøÍùÁíÍâÒ»¸öСÇøÒƶ¯¹ý³ÌÖУ¬ÓÉÓÚûÓÐÅäÖÃÇл»¹Øϵ¶øÔì³ÉÊÖ»úûÓÐÐźţ¬´Ó¶øÔì³Éµô»°µÈÎÊÌâ¡£ÈÅÂëÐèҪ¥Ö÷»ØÈ¥ºÃºÃ··Ê飡ÎÒҲû¸ãÌ«Ã÷°×¡£
»Ø´ðÕߣº
doumaoguang
»Ø´ðʱ¼ä£º2012-12-09 23:38
29 21
Â¥É϶¼ÒѾ»Ø´ðÁËl
»Ø´ðÕߣº
wojiaoliuli521
»Ø´ðʱ¼ä£º2012-12-10 02:39
22 16
ѧϰ
»Ø´ðÕߣº
fengyijiu008
»Ø´ðʱ¼ä£º2012-12-10 09:33
21 17
ѧϰ£¬¡°Ð¡ÇøÈÅÂëÓÐûÓÐ×öÇл»¡±ÊÇÔõô»ØÊ£¿
»Ø´ðÕߣº
guoning0914
»Ø´ðʱ¼ä£º2012-12-10 09:38
21 22
TD-SCDMA¹²ÓÐ128¸öÈÅÂ룬ÔÚ´Ë128¸öÈÅÂëµÄ¸´ºÏÂ뼯ºÏÖУ¬Êµ¼ÊÉÏÖ»ÓÐ12¸ö²»Í¬µÄ¸´ºÏÂ뼯ºÏ£¬Ò»¸ö¼¯ºÏÖеÄÈÎÒ»¸´ºÏÂëÓëÁíÒ»¼¯ºÏÖеÄÈÎÒ»¸´ºÏÂ붼²»Í¬¡£ÏàÓ¦µØ£¬¸ù¾ÝÀ©Æµ±ÈΪ16µÄ¸´ºÏÂ뼯ºÏ£¬128¸öÈÅÂë¿ÉÒÔ·ÖΪ12×é¡£
ÈÅÂëÓÅ»¯·½·¨£¬½áºÏ¸´ºÏÂëµÄÌØÐÔ£¬ÎªÐ¡ÇøÑ¡Ôñ×îºÏÊʵÄÈÅÂ룬±ÜÃâÏàÁÚСÇø»¥Ïà¹ØÌØÐÔ£¬Ïû³ý¸ÉÈÅ£¬½â¾öÍøÂçÖÐÇл»Ê§°ÜµÈ¸ÉÈÅʼþ¡£¾ÙÀý:
ʯ¼ÒׯAÕ¾aСÇøÈÅÂëΪ127£¬ÊôÓÚµÚ6×飻ʯ¼ÒׯBÕ¾aСÇøÈÅÂëΪ51£¬Í¬ÑùÊôÓÚµÚ6×é¡£Á½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ¼«´ó£¬µ¼ÖÂÊÖ»úÔÚ´ËÇøÓòÄÚÊÕµ½½ÏǿСÇø¼ä¸ÉÈÅ£¬DPCH C/I=-9db¡£×îÖÕÔì³ÉÇл»Ê§°Ü¡£
ÎÊÌâ´¦Àí
ÐèÒª¸ü»»Ê¯¼ÒׯBÕ¾aСÇøµÄÈÅÂ룬ʹÁ½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ±äС£¬¼õÉÙÊÖ»úÔÚ´ËÇøÓòÄÚÊÕµ½¸ÉÈÅÐźš£ÔÚSF=16µÄ¸´ºÏÂ뼯ºÏÖ®¼ä£¬¼¯ºÏ¼ä¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ²¢²»Ò»Ö£¬±ÈÈçµÚ2×éÓëµÚ9×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.9375£¬¶øµÚ1×éÓëµÚ2×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.5625¡£
ʯ¼ÒׯAÕ¾aСÇøÈÅÂëΪ127£¬ÊôÓÚµÚ6×飬¿¼ÂÇÖÜΧСÇøÈÅÂëÉèÖú󣬽¨Òéʯ¼ÒׯBÕ¾aСÇøÈÅÂë¸ü¸ÄΪ8£¬ÊôÓÚµÚ4×é¡£µÚ4×éÓëµÚ6×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.6875¡£ÉèÖúó½«ÓÐЧµÄ½µµÍÁ½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ¡£¼õСÊÖ»úÊܵ½µÄ¸ÉÈÅ¡£
´¦Àí½á¹û
µ÷Õûʯ¼ÒׯBÕ¾aСÇøÈÅÂ룬ÓÉ51¸ü¸ÄΪ8¡£ÒòÈÅÂë8Óë127Ïà¹ØÐÔ½ÏС£¬´Ë·¿Úʯ¼ÒׯAÕ¾aСÇøÓëʯ¼ÒׯBÕ¾aСÇøÖ®¼äͬÈÅÂë×é¸ÉÈÅÎÊÌâµÃµ½½â¾ö£¬¸´²âʱÊÖ»ú½ÓÊÕµÄDPCH C/IÁ¼ºÃ£¬Í¨»°Õý³££¬Î´ÔÙ·¢ÉúÇл»Ê§°ÜµÈ¸ÉÈÅÎÊÌâ¡£Ìá¸ßÁËÍøÂçÖÊÁ¿£¬¸ÄÉÆÓû§¸ÐÖª¶È¡£
ʯ¼ÒׯAÕ¾aСÇøÈÅÂëΪ127£¬ÊôÓÚµÚ6×飻ʯ¼ÒׯBÕ¾aСÇøÈÅÂëΪ51£¬Í¬ÑùÊôÓÚµÚ6×é¡£Á½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ¼«´ó£¬µ¼ÖÂÊÖ»úÔÚ´ËÇøÓòÄÚÊÕµ½½ÏǿСÇø¼ä¸ÉÈÅ£¬DPCH C/I=-9db¡£×îÖÕÔì³ÉÇл»Ê§°Ü¡£
ÎÊÌâ´¦Àí
ÐèÒª¸ü»»Ê¯¼ÒׯBÕ¾aСÇøµÄÈÅÂ룬ʹÁ½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ±äС£¬¼õÉÙÊÖ»úÔÚ´ËÇøÓòÄÚÊÕµ½¸ÉÈÅÐźš£ÔÚSF=16µÄ¸´ºÏÂ뼯ºÏÖ®¼ä£¬¼¯ºÏ¼ä¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ²¢²»Ò»Ö£¬±ÈÈçµÚ2×éÓëµÚ9×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.9375£¬¶øµÚ1×éÓëµÚ2×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.5625¡£
ʯ¼ÒׯAÕ¾aСÇøÈÅÂëΪ127£¬ÊôÓÚµÚ6×飬¿¼ÂÇÖÜΧСÇøÈÅÂëÉèÖú󣬽¨Òéʯ¼ÒׯBÕ¾aСÇøÈÅÂë¸ü¸ÄΪ8£¬ÊôÓÚµÚ4×é¡£µÚ4×éÓëµÚ6×éÖ®¼äµÄ×î´ó»¥Ïà¹ØΪ0.6875¡£ÉèÖúó½«ÓÐЧµÄ½µµÍÁ½¸öСÇø¸´ºÏÂëµÄ»¥Ïà¹ØÌØÐÔ¡£¼õСÊÖ»úÊܵ½µÄ¸ÉÈÅ¡£
´¦Àí½á¹û
µ÷Õûʯ¼ÒׯBÕ¾aСÇøÈÅÂ룬ÓÉ51¸ü¸ÄΪ8¡£ÒòÈÅÂë8Óë127Ïà¹ØÐÔ½ÏС£¬´Ë·¿Úʯ¼ÒׯAÕ¾aСÇøÓëʯ¼ÒׯBÕ¾aСÇøÖ®¼äͬÈÅÂë×é¸ÉÈÅÎÊÌâµÃµ½½â¾ö£¬¸´²âʱÊÖ»ú½ÓÊÕµÄDPCH C/IÁ¼ºÃ£¬Í¨»°Õý³££¬Î´ÔÙ·¢ÉúÇл»Ê§°ÜµÈ¸ÉÈÅÎÊÌâ¡£Ìá¸ßÁËÍøÂçÖÊÁ¿£¬¸ÄÉÆÓû§¸ÐÖª¶È¡£
»Ø´ðÕߣº
hp898
»Ø´ðʱ¼ä£º2012-12-10 09:38
28 14
¸ÅÄî²»Ò»Ñù£¬ÄãÏÈ°ÑÈýÕ߸ÅÄî¿´Ò»±é£¡
»Ø´ðÕߣº
LeLe_oy
»Ø´ðʱ¼ä£º2012-12-10 09:40
21 14
ÐÂÈË~ѧϰ
»Ø´ðÕߣº
ly67141214
»Ø´ðʱ¼ä£º2012-12-10 10:13
23 15
ÇóÎÊ£¬µçƽǿ¶È´óÓÚ-85£¬µ«ÊÇÖÊÁ¿¶à³öÏÖÔÚ345¼¶£¬ÊÇ·ñ¿ÉÒÔ¶¨ÒåΪÈô¸²¸Ç£¿
»Ø´ðÕߣº
upliu00
»Ø´ðʱ¼ä£º2012-12-10 11:07
19 23
àŠѧϰÁË
»Ø´ðÕߣº
Ðý¹â
»Ø´ðʱ¼ä£º2012-12-10 14:22
23 17
ÀýÈçÓö¦Á¢Èí¼þ¿´µÄ»°£¬´æÔÚÖÊÁ¿ºÍÐźŸ÷·½ÃæºÃÓÚ·þÎñСÇø£¬µ«ÊÇÈ´ÔÚDN¼¯ÄÚ£¬Õâ¾ÍÊÇ×îÖ±¹ÛµÄÁÚÇø©Å䣬·þÎñСÇø¸üÓ¦¸ÃÊÇËü£¬ÒòΪËüÄÜÌṩ¸üºÃµÄÐźźÍÖÊÁ¿£¬µ«ÊÇÁÚÇø©ÅäµÄ»°£¬ÄǾÍÖ»ÄܶԷþÎñСÇø¸ÉÈÅÁË
»Ø´ðÕߣº
niumeng
»Ø´ðʱ¼ä£º2012-12-10 23:05
21 16
ѧϰһÏ£¬¸ßÊÖÔƼ¯°¡
»Ø´ðÕߣº
boss_doer
»Ø´ðʱ¼ä£º2012-12-11 08:18
26 18
ÈȵãÎÊÌâ
¸ü¶à¾«²Ê
ÁªÏµÎÒÃÇ - ÎÊͨÐÅר¼Ò | Powered by MSCBSC Òƶ¯Í¨ÐÅÍø © 2006 - |