Title :
A low-cost multi-user receiver for synchronous CDMA systems
Author :
Alkussayer, H.M. ; Guo, Y.J. ; Barton, S.K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
Abstract :
The effect of noise enhancement of the linear decorrelating detector (LDD) is investigated by studying a low complexity receiver for synchronous code division multiple access (CDMA) systems. Using Gold codes as the spreading sequences a general formula of the decorrelating matrix is obtained, which leads to a simplified receiver structure and explicit expression of the bit error rate (BER). It is shown that even with multiple access interference (MAI) reduced, the BER of the system is still dependent on the bandwidth efficiency. For a given bandwidth efficiency the system performance improves when the processing gain is increased
Keywords :
Gaussian channels; Gaussian noise; code division multiple access; error statistics; interference suppression; matched filters; pseudonoise codes; radio receivers; spread spectrum communication; AWGN channel; BER; Gold codes; bandwidth efficiency; bit error rate; decorrelating matrix; linear decorrelating detector; low complexity receiver; low-cost multi-user receiver; multiple access interference; noise enhancement; spreading sequences; synchronous CDMA systems; synchronous code division multiple access; system performance; Bandwidth; Bit error rate; Code division multiplexing; Decorrelation; Detectors; Gold; Multiaccess communication; Multiple access interference; Performance gain; System performance;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.591907
