Title :
Exact bit-error rate analysis of multirate DS-CDMA schemes
Author :
Fan, Mingxi ; Minn, Thit ; Siu, Kai-Yrung
Author_Institution :
Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
The exact error probability of multirate schemes in DS-CDMA is computed. In particular, the performance of variable spreading-gain and multi-code transmission methods in both additive Gaussian noise and multipath fading channel models is studied. Conventional matched filtering and a diversity combining RAKE receiver are used at the receiver. Based on our results, we deduce conditions in which the bit-error rate (BER) measurement based on the classical Gaussian approximation is valid. We show that both transmission schemes are comparable under various channel models and signal-to-noise ratio levels.
Keywords :
3G mobile communication; AWGN channels; code division multiple access; diversity reception; error statistics; fading channels; filtering theory; matched filters; multipath channels; multiuser channels; radio receivers; spread spectrum communication; AWGN channel; BER measurement; Gaussian approximation; SNR levels; additive Gaussian noise; diversity combining RAKE receiver; exact BER analysis; exact bit-error rate analysis; exact error probability; matched filtering; multi-code transmission method; multipath fading channel model; multirate DS-CDMA; signal-to-noise ratio levels; third generation communication system; transmission schemes; variable spreading-gain method; Additive noise; Bit error rate; Diversity reception; Error probability; Fading; Filtering; Gaussian noise; Matched filters; Multiaccess communication; Multipath channels;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1048575
