Title :
Performance of multistage detector with one-shot decorrelating type first stage in an asynchronous DS/CDMA system
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
Abstract :
Multiuser detection of an asynchronous CDMA system is discussed. The focus is on the use of a multistage detector with a one-shot decorrelating detector as a first stage. The bit error probability formula is presented in a new form in order to simplify computation of numerical examples. The performance is compared with better known detectors for the first time. Improved performance in compared with using conventional first stage or other suboptimum multiuser detectors is observed. Furthermore, the bit error probability is presented as a function of the users´ delay difference in some numerical examples
Keywords :
code division multiple access; coding errors; error statistics; probability; pseudonoise codes; signal detection; spread spectrum communication; asynchronous DS/CDMA system; bit error probability; multistage detector; multiuser detection; one-shot decorrelating detector; one-shot decorrelating first stage; performance; suboptimum multiuser detectors; users delay difference; Additive white noise; Decorrelation; Delay; Detectors; Error probability; Gunshot detection systems; Matched filters; Maximum likelihood detection; Multiaccess communication; Signal processing;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on
Conference_Location :
Oulu
Print_ISBN :
0-7803-1750-5
DOI :
10.1109/ISSSTA.1994.379604
