Title :
BER performance of 2-D-RAKE receivers with power control error in Nakagami fading channels
Author :
Huang, Kaizhi ; Wang, Jing ; Wang, Youzheng ; Chen, Guoan
Author_Institution :
State. Key Lab. on Microwave & Digital Commun., Tsinghua Univ., Beijing, China
fDate :
29 June-1 July 2002
Abstract :
It is well known that power control is critical in CDMA mobile systems and the power control error (PCE) exists in spite of power control methods being used. In this paper, the closed-form expressions of signal-to-interference-plus-noise ratio (SINR) and the average bit error rate (BER) are derived for a two-dimensional (2-D)-RAKE receiver with imperfect power control in a frequency-selective Nakagami fading channel.. The combined impact of PCE, multipath Nakagami fading, spatial and temporal diversity order, and multiple-access interference on the system performance has been analyzed for all kinds of fading environments. The simulation results indicate that the BER performance degrade due to PCE. But increasing spatial and temporal diversity order can possibly compensate for the performance loss when PCE is not very serious. The exact performance improvement due to space-time processing varies with the PCE and the fading environment.
Keywords :
code division multiple access; diversity reception; error statistics; fading channels; mobile radio; power control; radio receivers; radiofrequency interference; telecommunication control; 2D-RAKE receivers; BER performance; CDMA mobile radio systems; Nakagami fading channels; SINR; average bit error rate; closed-form expressions; frequency-selective fading channel; imperfect power control; multipath fading; multiple-access interference; power control error; signal-to-interference-plus-noise ratio; simulation results; space-time processing; spatial diversity; temporal diversity; Bit error rate; Closed-form solution; Error correction; Fading; Frequency; Multiaccess communication; Multiple access interference; Power control; Signal to noise ratio; System performance;
Conference_Titel :
Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on
Print_ISBN :
0-7803-7547-5
DOI :
10.1109/ICCCAS.2002.1180647
