Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 906  |  »Ø¸´: 4
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Ëïºé¿¡

гæ (СÓÐÃûÆø)

[ÇóÖú] Çó´óÉñÖ¸µ¼ÐÅÔë±ÈµÄÎÊÌâ

¼ÆËãÐÅÔë±Èʱºò
1.ÄÜÁ¿ÊDZàÂëǰµÄ»¹ÊDZàÂëºóµÄÄÜÁ¿³ýÒÔÔëÉùÄÜÁ¿ÄØ£¿
2.Èç¹ûʹÓõıàÂëÖ®ºó£¬±ÈÈç[0 1 0 1],±àÂëºóÊÇ[0 1 0 1 1 0],ÄÇô¼ÙÉè±àÂëǰÄÜÁ¿ÊÇ1£¬±àÂëºóÄÜÁ¿ÊÇ2/3,»¹ÊÇ3/2ÄØ?
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

³¤°²Ð¡¶¹

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ê×ÏÈÇø·ÖÒÔϸÅÄ
Eb£ºÃ¿ÐÅÏ¢bitÄÜÁ¿
Es£ºÃ¿¸ö·¢ËÍ·ûºÅµÄÄÜÁ¿
¹ØÏµÎª£ºEs=R *Eb ÆäÖÐRÊÇÂëÂÊ

ÐÅÔë±È£¨SNR£©£ºÐźÅÔëÉù¹¦ÂʱȠ ¸ß˹ÐŵÀÏÂ
SNR=(Es/T)/(N0*W)  ÆäÖÐÇ°ÃæÊÇ·ûºÅÄÜÁ¿/·ûºÅÖÜÆÚ  ºóÃæÊÇÔëÉù¹¦ÂÊÆ×ÃܶÈ*ÐźŴø¿í
=2Es/N0
=2REb/N0
4Â¥2012-09-06 17:02:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 5 ¸ö»Ø´ð

qsj8362234

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÐÅÔë±ÈÊÇÎïÀí²ãµÄ¸ÅÄî
±àÂëºóµÄÊý¾Ý[0 1 0 1 1 0]¶ÔÓ¦µÄÐÅºÅµçÆ½Îª[-1 1 -1 1 1 -1]
ÄÜÁ¿Ó¦¸ÃËã¶ÔÓ¦µçƽµÄÄÜÁ¿£¬
2Â¥2012-09-06 14:24:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ëïºé¿¡

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by qsj8362234 at 2012-09-06 14:24:50
ÐÅÔë±ÈÊÇÎïÀí²ãµÄ¸ÅÄî
±àÂëºóµÄÊý¾Ý¶ÔÓ¦µÄÐÅºÅµçÆ½Îª
ÄÜÁ¿Ó¦¸ÃËã¶ÔÓ¦µçƽµÄÄÜÁ¿£¬

¿ÉÊǶÔÓ¦µçƽÄÜÁ¿ÊǶàÉÙ°¡£¿
3Â¥2012-09-06 16:32:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qsj8362234

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÒýÓûØÌû:
3Â¥: Originally posted by Ëïºé¿¡ at 2012-09-06 16:32:32
¿ÉÊǶÔÓ¦µçƽÄÜÁ¿ÊǶàÉÙ°¡£¿...

ÄãÄÜ¶à¸øµãÐÅϢô ±ÈÈçÄãÒª»ù´ø·ÂÕæ ʲôµ÷ÖÆ·½Ê½£¿ËÙÂÊÊǶàÉٵȵÈ
5Â¥2012-09-07 13:08:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 293Çóµ÷¼Á +16 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 18/900 2026-04-13 21:47 by ѧԱJpLReM
[¿¼ÑÐ] µ÷¼ÁÇóÊÕÁô +31 ¹ûÈ»ÓÐÎÒ 2026-04-10 32/1600 2026-04-13 21:35 by gretl
[¿¼ÑÐ] ²ÄÁÏÏà¹Ø×¨Òµ344Çóµ÷¼ÁË«·Ç¹¤¿ÆÑ§Ð£»ò¿ÎÌâ×é +16 hualkop 2026-04-12 17/850 2026-04-13 21:22 by gretl
[»ù½ðÉêÇë] Óб¬ÁÏ£¬Ò»¸öÇàÄê½ÌʦÂô·¿µÃ400Íò£¬È»ºó»»ÁËÒ»¸öËÄÇàñ×Ó +11 babu2015 2026-04-08 11/550 2026-04-13 16:33 by probebill
[¿¼ÑÐ] 0856ר˶Çóµ÷¼Á Ï£ÍûÊÇaÇøÔºÐ£ +23 ºÃºÃÐÝÏ¢ºÃ²»ºÃ 2026-04-09 26/1300 2026-04-13 14:22 by ÕÅzhihao
[¿¼ÑÐ] 344 ²ÄÁÏרҵ Çóµ÷¼Á211 ÎÞµØÓòÒªÇó +8 hualkop 2026-04-11 8/400 2026-04-12 22:24 by fqwang
[¿¼ÑÐ] ÉúÎïѧ308Çóµ÷¼Á +5 ÏàÐűػá¹ââÍòÕ 2026-04-11 5/250 2026-04-12 18:14 by zhouxiaoyu
[¿¼ÑÐ] 2±¾£¬³õÊÔ303£¬0860Çóµ÷¼Á +6 floriea 2026-04-12 8/400 2026-04-12 18:13 by zhouxiaoyu
[¿¼ÑÐ] µçÆø¹¤³Ìר˶320Çóµ÷¼Á +5 СÂé×Ó111 2026-04-10 5/250 2026-04-12 10:47 by zhouyuwinner
[¿¼ÑÐ] 291Çóµ÷¼Á +8 ¹ØÒä±±. 2026-04-11 8/400 2026-04-12 09:32 by ÄæË®³Ë·ç
[»ù½ðÉêÇë] ɽ¶«Ê¡»ù½ð2026 +5 jerry681 2026-04-08 6/300 2026-04-12 08:33 by kudofaye
[¿¼ÑÐ] »¯Ñ§¹¤³Ìµ÷¼Á289 +44 yangæÃ 2026-04-07 50/2500 2026-04-12 02:36 by Çï¶¹²ËÑ¿
[¿¼ÑÐ] ҩѧר˶µ÷¼Á +8 ? һ·Éú?»¨? 2026-04-10 10/500 2026-04-11 21:21 by zhouxiaoyu
[¿¼ÑÐ] 309Çóµ÷¼Á +14 wdhw 2026-04-10 15/750 2026-04-10 21:06 by zhouxiaoyu
[¿¼ÑÐ] 071000ÉúÎïѧµ÷¼ÁÇóÖú +17 zzzzwww 2026-04-09 20/1000 2026-04-10 15:55 by Çóµ÷¼Ázz
[¿¼ÑÐ] Ò»Ö¾Ô¸ÖпÆÔº105500רҵ×Ü·Ö315Çóµ÷¼Á +6 lallalh 2026-04-09 7/350 2026-04-09 17:51 by lallalh
[¿¼ÑÐ] ÉúÎïѧ328·ÖÇóµ÷¼Á +9 ÉÁµçkkl 2026-04-08 10/500 2026-04-08 21:42 by liuhuiying09
[¿¼ÑÐ] µç×ÓÐÅÏ¢346 +4 zuoshaodian 2026-04-08 4/200 2026-04-08 11:54 by zzucheup
[¿¼ÑÐ] 263·ÖBÇøÇóµ÷¼Á +6 Àînihao 2026-04-08 6/300 2026-04-08 09:38 by ÄÏ¿ªÐ¡ôë
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷µç085401Çóµ÷¼Á +4 sunw1306 2026-04-07 4/200 2026-04-07 16:40 by à£à£à£0119
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û