| ²é¿´: 1206 | »Ø¸´: 6 | ||
| µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû | ||
yanweicumtÒø³æ (СÓÐÃûÆø)
|
[ÇóÖú]
channel fading ÎÊÌâ
|
|
|
the channel gain, G between a transmitter v and a receiver u, is composed of distance-dependent path loss, log-normal shadowing, and channel variations due to frequency-selective fading. G=H^2*10^((-L(d)+X)/10) where H accounts for the channel transfer factor between transmitter and receiver, L(d) is the distance-dependent path loss (in dB), and X is the log-normal shadowing value(in dB) with standard deviation delta. the delay profiles are used to generate the frequency-selective fading channel transfer factor H. ÇëÎÊÔÚÕâ¶Î»°ÖУ¬Õâ¸öH ¸ÃÔõôÇó³öÀ´°¡£¬Ð»Ð»¡£ |
» ²ÂÄãϲ»¶
ѰÇóÒ»ÖÖÄÜ¿¸×¡Ç¿Ñõ»¯ÐÔ¸¯Ê´ÐÔµÄÈÝÆ÷ÃÜ·â¼þ
ÒѾÓÐ7È˻ظ´
µ½Ðµ¥Î»ºó£¬»»ÁËеÄÑо¿·½Ïò£¬Ã»ÓÐÍŶӣ¬³ÖÐø»ýÀÛ2ÇøÒÔÉÏÂÛÎÄ£¬ÄÜÉêÇëµ½ÃæÉÏÂð
ÒѾÓÐ8È˻ظ´
ÉêÇë2026Ä격ʿ
ÒѾÓÐ6È˻ظ´
ÇëÎÊÄÄÀï¿ÉÒÔÓÐÇàBÉêÇëµÄ±¾×Ó¿ÉÒÔ½è¼øÒ»Ï¡£
ÒѾÓÐ5È˻ظ´
Ìì½ò¹¤Òµ´óѧ֣Áø´ºÍŶӻ¶Ó»¯Ñ§»¯¹¤¡¢¸ß·Ö×Ó»¯Ñ§»òÓлúºÏ³É·½ÏòµÄ²©Ê¿ÉúºÍ˶ʿÉú¼ÓÈë
ÒѾÓÐ5È˻ظ´
2025ÀäÞøÑ§Ê²Ã´Ê±ºò³ö½á¹û
ÒѾÓÐ7È˻ظ´
ÇëÎÊÓÐÆÀÖ°³Æ£¬°Ñ¿ÆÑнÌѧҵ¼¨Ëã·ÖÅÅÐòµÄ¸ßУÂð
ÒѾÓÐ6È˻ظ´
Bioresource TechnologyÆÚ¿¯£¬µÚÒ»´Î·µÐÞµÄʱºò±»Í˻غü¸´ÎÁË
ÒѾÓÐ7È˻ظ´
ÇëÎÊÏ´ó¼ÒΪʲôÕâ¸öÁåľżÁª¼¸ºõ²»·´Ó¦ÄØ
ÒѾÓÐ5È˻ظ´
¿µ¸´´óѧ̩ɽѧÕßÖÜì÷»ÝÍŶÓÕÐÊÕ²©Ê¿Ñо¿Éú
ÒѾÓÐ6È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
Ó¢¹ú·ÃÎÊѧÕßǩ֤ÑÓÆÚÎÊÌâ
ÒѾÓÐ25È˻ظ´
ÃæÉÏÉêÇëÊéµç×Ó°æÎÊÌâ
ÒѾÓÐ6È˻ظ´
Ժ˱í´ïÎÊÌâ
ÒѾÓÐ14È˻ظ´
ÓйØgreºÍgre subjectµÄÎÊÌâ
ÒѾÓÐ4È˻ظ´
Àë×ÓÒºÌåµÄÏà¹ØÎÊÌâ
ÒѾÓÐ5È˻ظ´
ÈçºÎÔÚArcGISÖмÆËãºÓµÀ£¨channel£©µÄÆÂ¶È£¿
ÒѾÓÐ5È˻ظ´
¿ìҪץ¿ñÁË£¬Çë½ÌÒ»¸ö¹ØÓÚENDNOTEÖúÊÖµÄʹÓÃÎÊÌâ
ÒѾÓÐ3È˻ظ´
If cctv have three channel,which three channel do you like ?
ÒѾÓÐ15È˻ظ´
¡¾Share¡¿Govt plans to improve fading public confidence in food safety
ÒѾÓÐ3È˻ظ´
¡¾ÇóÖú/½»Á÷¡¿ÈõÈõµÄÎÊÏÂ:DNAµçӾͼƬµÄchannelµÄ±êºÅºÍmarker´óС,´ó¼Ò¶¼ÊÇÓÃʲôÈí¼
ÒѾÓÐ8È˻ظ´
¡¾ÇóÖú¡¿EBSDÊý¾Ý´¦ÀíÈí¼þ Channel 5 HKL
ÒѾÓÐ4È˻ظ´
Jonathan_Qi
ͳæ (³õÈëÎÄ̳)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 119.3
- Ìû×Ó: 23
- ÔÚÏß: 23.3Сʱ
- ³æºÅ: 1479107
- ×¢²á: 2011-11-06
- רҵ: ͨÐÅÀíÂÛÓëϵͳ
4Â¥2012-02-07 12:58:17
MissInTheSky
Òø³æ (СÓÐÃûÆø)
- Ó¦Öú: 7 (Ó×¶ùÔ°)
- ½ð±Ò: 539.2
- É¢½ð: 160
- ºì»¨: 10
- Ìû×Ó: 199
- ÔÚÏß: 149.7Сʱ
- ³æºÅ: 1429510
- ×¢²á: 2011-10-06
- רҵ: ÐźÅÀíÂÛÓëÐźŴ¦Àí
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
nono2009(½ð±Ò+1): ¹ÄÀøÓ¦Öú 2012-02-07 09:02:50
yanweicumt(½ð±Ò+1): 2012-02-07 11:06:33
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
nono2009(½ð±Ò+1): ¹ÄÀøÓ¦Öú 2012-02-07 09:02:50
yanweicumt(½ð±Ò+1): 2012-02-07 11:06:33
| HÊǸù¾ÝÐŵÀµÄ³å¼¤ÏìÓ¦Çó³öÀ´µÄ£¬¼´ËüµÄFourier±ä»» |
2Â¥2012-02-06 22:44:39
yanweicumt
Òø³æ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 394.1
- É¢½ð: 36
- Ìû×Ó: 128
- ÔÚÏß: 32.4Сʱ
- ³æºÅ: 746558
- ×¢²á: 2009-04-12
- רҵ: ͨÐÅÀíÂÛÓëϵͳ
3Â¥2012-02-07 11:07:03
dragonkiss
Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)
- Ó¦Öú: 58 (³õÖÐÉú)
- ¹ó±ö: 0.2
- ½ð±Ò: 5372.7
- É¢½ð: 389
- ºì»¨: 8
- Ìû×Ó: 4299
- ÔÚÏß: 191.4Сʱ
- ³æºÅ: 17969
- ×¢²á: 2003-07-05
- ÐÔ±ð: GG
- רҵ: ÐÅÏ¢´¦Àí·½·¨Óë¼¼Êõ

5Â¥2012-02-07 16:26:20













»Ø¸´´ËÂ¥