Title :
Convergence and stability analysis of the adaptive “Bootstrap” CDMA multi-user detector
Author :
Lee, Cheng-Chou ; Bar-Ness, Yeheskel
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
The “Bootstrap” algorithm provides an efficient adaptive mult-user detection approach to solve the near-far problem in CDMA communication systems. The weight vectors are controlled by a simple decorrelation scheme which minimizes the correlation between their outputs and the hard limited version of the other outputs, respectively. It has been shown that the “Bootstrap” algorithm provides performance similar to that of MMSE with low complexity. In this article, the convergence and stability of the “Bootstrap” algorithm is considered. Sufficient conditions for the code cross-correlation and the step size are provided
Keywords :
adaptive signal detection; code division multiple access; convergence of numerical methods; correlation methods; decorrelation; filtering theory; matched filters; matrix algebra; numerical stability; Bootstrap algorithm; CDMA communication systems; MMSE; adaptive Bootstrap CDMA multi-user detector; code cross-correlation; convergence analysis; correlation minimization; decorrelation; low complexity; matched filter; matrix; near-far problem; performance; stability analysis; step size; sufficient conditions; weight vectors; Adaptive signal detection; Convergence; Decorrelation; Detectors; Matched filters; Multiaccess communication; Multiuser detection; Propagation delay; Signal processing algorithms; Stability analysis;
Conference_Titel :
Communication Theory Mini-Conference, 1999
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5653-5
DOI :
10.1109/CTMC.1999.790258
