Code Division Multiple Access (CDMA) phần 5 ppt

... low-powered Out-of-cell interference Out-of-cell interference Out-of-cell interference Mobiles FIGURE 3 .5: Illustration of the uplink of a cellular CDMA system. P1: IML/FFX P2: IML MOBK023-03 MOBK023-Buehrer.cls September 28, 2006 15: 55 74 CODE DIVISION MULTIPLE ACCESS (CDMA) 0 50 0 1000 150 0 0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 0.02 Total ... P2: IML MOBK02...

Ngày tải lên: 07/08/2014, 21:20

... IML MOBK023-03 MOBK023-Buehrer.cls September 28, 2006 15: 55 94 CODE DIVISION MULTIPLE ACCESS (CDMA) 0 5 10 15 20 25 30 35 0 0 .5 1 1 .5 2 2 .5 3 Number of simultaneous users SNR required to achieve ... 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...

Ngày tải lên: 07/08/2014, 21:20

... 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 ... IML MOBK023-04 MOBK023-Buehrer.cls September 28, 2006 15: 55 118 CODE DIVISION MULTIPLE ACCESS (CDMA) indicator of the success or failure of packet access since...

Ngày tải lên: 07/08/2014, 21:20

... in Section 5. 5. P1: IML/FFX P2: IML MOBK023-04 MOBK023-Buehrer.cls September 28, 2006 15: 55 126 P1: IML/FFX P2: IML MOBK023- 05 MOBK023-Buehrer.cls September 28, 2006 15: 56 138 CODE DIVISION MULTIPLE ACCESS ... IML MOBK023-04 MOBK023-Buehrer.cls September 28, 2006 15: 55 SPREAD SPECTRUM PACKET RADIO NETWORKS 1 25 0 50 100 150 200 250 300 350 400 0 0. 05 0.1 0. 15 0.2 0. 25...

Ngày tải lên: 07/08/2014, 21:20

... =0 (−1) s P s  RAb +  M  s =0 (−1) s P s  n (5. 88) P1: IML/FFX P2: IML MOBK023- 05 MOBK023-Buehrer.cls September 28, 2006 15: 56 150 CODE DIVISION MULTIPLE ACCESS (CDMA) Mathematically, we can represent ... 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...

Ngày tải lên: 07/08/2014, 21:20

... IML MOBK023- 05 MOBK023-Buehrer.cls September 28, 2006 15: 56 172 CODE DIVISION MULTIPLE ACCESS (CDMA) Gaussian random variable with a standard deviation of 150 Hz. We see that an approximately 2 .5 times ... P2: IML MOBK023- 05 MOBK023-Buehrer.cls September 28, 2006 15: 56 164 CODE DIVISION MULTIPLE ACCESS (CDMA) to make symbol decisions and the received signal can...

Ngày tải lên: 07/08/2014, 21:20