DocumentCode :
318143
Title :
Efficient evaluation of cellular CDMA over a Rayleigh-faded channel
Author :
Oh, S.W. ; Cheah, K.L. ; Li, K.H.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Volume :
2
fYear :
1997
fDate :
3-8 Nov 1997
Firstpage :
889
Abstract :
The bit error rate (BER) analysis of an asynchronous direct-sequence code-division multiple-access (DS-CDMA) cellular system over Rayleigh-fading channels often results in complicated expressions even though Gaussian approximation is applied. Numerical computation of this expression is limited by the issues of complexity, efficiency and accuracy. As a result, a combined PDF approach for the forward link and a mean-method technique for the reverse link are proposed to reduce the computational complexity and increase the accuracy, significantly. The essential theory in deriving the simplified BER expressions for both links is presented. Observation on the simplified expressions shows that the computational effort for these two approaches grows only linearly with the number of interfering cells in the system regardless of the number of active mobiles in the cell. Finally, comparison with simulation shows that the results obtained are very accurate
Keywords :
Rayleigh channels; approximation theory; cellular radio; code division multiple access; coding errors; computational complexity; error statistics; fading; land mobile radio; probability; radio links; radiofrequency interference; BER analysis; Gaussian approximation; PDF; Rayleigh-faded channel; accuracy; asynchronous direct-sequence CDMA; bit error rate; cellular CDMA; cellular system; code-division multiple-access; computational complexity; efficiency; forward link; interfering cells; mean-method technique; multiple access interference; reverse link; simulation; Base stations; Bit error rate; Computational complexity; Delay effects; Error analysis; Gaussian approximation; Independent component analysis; Multiaccess communication; Multiple access interference; Rayleigh channels;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
Type :
conf
DOI :
10.1109/GLOCOM.1997.638455
Filename :
638455
Link To Document :
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