Code Division Multiple Access (CDMA) phần 7 pps

... MOBK023-Buehrer.cls September 28, 2006 15:55 114 CODE DIVISION MULTIPLE ACCESS (CDMA) Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 Node 7 Common code Common code C o d e # 4 C o d e # 2 Primary collision Secondary collision FIGURE ... common code, Node 2 is transmitting on Code 2, Node 4 is transmitting on Code 4, and Node 7 is transmitting on the common code. Node...

Ngày tải lên: 07/08/2014, 21:20

... 28, 2006 15:55 82 CODE DIVISION MULTIPLE ACCESS (CDMA) 3.1.4 Statistical Multiplexing The final fundamental CDMA concept that we will discuss in this section is termed statistical multiplexing, which ... 2006 15:54 72 P1: IML/FFX P2: IML MOBK023-03 MOBK023-Buehrer.cls September 28, 2006 15:55 CELLULAR CODE DIVISION MULTIPLE ACCESS 79 Comparing this to TDMA or FDMA, K td...

Ngày tải lên: 07/08/2014, 21:20

... September 28, 2006 15:55 102 CODE DIVISION MULTIPLE ACCESS (CDMA) 0 0.1 0.2 0.3 0.4 0.5 0.6 0 .7 0.8 0.9 1 0 0.5 1 1.5 2 AWGN channel 0 0.1 0.2 0.3 0.4 0.5 0.6 0 .7 0.8 0.9 1 0 0.5 1 1.5 2 Transmit ... IML/FFX P2: IML MOBK023-03 MOBK023-Buehrer.cls September 28, 2006 15:55 CELLULAR CODE DIVISION MULTIPLE ACCESS 97 Once we have determined the joint probability matrix, th...

Ngày tải lên: 07/08/2014, 21:20

... regarding the decorrelator in fading chan- nels [64 71 ], temporal dispersion [72 , 73 ], asynchronism [74 76 ], adaptive [77 , 78 ] and re- duced complexity [79 –82]. Other variants of the decorrelating detector ... with FER-based power control [103, 106, 1 07] . P1: IML/FFX P2: IML MOBK023-05 MOBK023-Buehrer.cls September 28, 2006 15:56 142 CODE DIVISION MULTIPLE ACCESS (CDMA)...

Ngày tải lên: 07/08/2014, 21:20

... IML MOBK023-05 MOBK023-Buehrer.cls September 28, 2006 15:56 162 CODE DIVISION MULTIPLE ACCESS (CDMA) 0 0.1 0.2 0.3 0.4 0.5 0.6 0 .7 0.8 0.9 1 10 - 3 10 - 2 10 - 1 10 0 Standard deviation of delay ... ρb 2 − ρsgn(b 2 + ρb 1 + n 2 ) + n 1  (5 .75 ) P1: IML/FFX P2: IML MOBK023-05 MOBK023-Buehrer.cls September 28, 2006 15:56 160 CODE DIVISION MULTIPLE ACCESS (CDMA) desir...

Ngày tải lên: 07/08/2014, 21:20

... Communications, vol. 25, pp. 79 5 79 9, August 1 977 .doi:10.1109/TCOM.1 977 .1093915 P1: IML/FFX P2: IML MOBK023-05 MOBK023-Buehrer.cls September 28, 2006 15:56 166 CODE DIVISION MULTIPLE ACCESS (CDMA) where Z k,l,i,n is ... 2006 17: 14 176 CODE DIVISION MULTIPLE ACCESS (CDMA) [43] M. B. Pursley, “The role of spread spectrum in packet radio networks,” Proceedings of...

Ngày tải lên: 07/08/2014, 21:20