Title :
Time signal processing for CDMA using given receiving configuration with RAKE receivers
Author_Institution :
Fac. of Electron. Eng., Nis Univ., Serbia
Abstract :
In this paper we are concerned with time signal processing in the case of multipath propagation. Using the concept in Maja Sarevska (2000) we have made modifications in order to provide sufficient BER performances for signals propagating through more than one paths. This solution demands knowledge of all user spreading CDMA sequences, path delays, and path amplitudes. We assume that the signals from all paths are with same amplitude in order to stress time channel characteristics, although the complete RAKE receiver solution provide amplitude compensation. We are getting a relatively simple solution and high performances improvement. These improvements are on the account of system capacity decreasing. This scheme is specially efficient when used jointly with space signal processing Gianluca Mazzini (1997).
Keywords :
code division multiple access; matched filters; multipath channels; radio receivers; random sequences; sequential estimation; signal processing; spread spectrum communication; BER performance; CDMA; RAKE receiver; amplitude compensation; matched filter; multipath propagation; path amplitude; path delay; receiving configuration; space signal processing; spreading CDMA sequence; stress time channel characteristic; system capacity; time signal processing; Decorrelation; Delay effects; Fading; Matched filters; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Receiving antennas; Signal processing;
Conference_Titel :
Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2003. TELSIKS 2003. 6th International Conference on
Print_ISBN :
0-7803-7963-2
DOI :
10.1109/TELSKS.2003.1246209