Title :
Comments on "Effect of system imperfections on BER performance of a CDMA receiver with multipath diversity combining"
Author :
Xie, Junsong ; Tang, Xiaohu ; Fan, Pingzhi
Author_Institution :
Inst. of Mobile Commun., Southwest Jiaotong Univ., Chengdu, China
Abstract :
For original paper see Panicker, J. and Kumar, S., ibid., vol.45, p.622-30 (1996). In Panicker and Kumar´s paper, a direct-sequence (DS) code-division multiple-access (CDMA) system with imperfections in power control, channel parameter, and spreading code-phase estimation was analyzed. The received signal power was modeled by a log-normally distributed random variable and the estimation errors were assumed to be zero-mean Gaussian-random variables. With Gaussian approximation, the bit error rate (BER) performance for such a multipath combining receiver was obtained. However, several errors (apparently due to incomplete proofreading) have been found in the performance analysis. These are noted and corrected.
Keywords :
channel estimation; code division multiple access; diversity reception; error statistics; multipath channels; phase estimation; radio receivers; spread spectrum communication; BER performance; DS-CDMA; bit error rate; channel estimation; channel parameter estimation; direct-sequence code-division multiple-access; estimation errors; log-normal distribution; multipath combining receiver; multipath diversity combining; power control; spreading code-phase estimation; zero-mean Gaussian-random variables; Bit error rate; Diversity reception; Estimation error; Gaussian approximation; Gaussian distribution; Multiaccess communication; Performance analysis; Power control; Power system modeling; Random variables;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2003.814479
