Title :
A simulation study of convergence speed for distributed codeword adaptation algorithms in CDMA wireless systems
Author :
Maharjan, Sahana ; Rawat, Danda B. ; Popescu, Dimitrie C.
Author_Institution :
ECE Dept., Old Dominion Univ., Norfolk, VA
Abstract :
In this paper we present a side-by-side comparison of interference avoidance (IA) algorithms for distributed codeword adaptation in CDMA systems. We consider the eigen-algorithm, the minimum mean square error (MMSE) algorithm, and the adaptive IA algorithm and investigate their convergence speed using extensive simulations of various uplink CDMA system scenarios.
Keywords :
code division multiple access; least mean squares methods; radiofrequency interference; CDMA wireless systems; code division multiple access; distributed codeword adaptation algorithms; interference avoidance algorithms; minimum mean square error algorithm; Control systems; Convergence; Covariance matrix; Distributed algorithms; Mean square error methods; Multiaccess communication; Multiple access interference; Quality of service; Signal to noise ratio; Transmitters;
Conference_Titel :
Radio and Wireless Symposium, 2009. RWS '09. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2698-0
Electronic_ISBN :
978-1-4244-2699-7
DOI :
10.1109/RWS.2009.4957373
