DocumentCode :
3281146
Title :
A novel DS/CDMA receiver with performance analysis
Author :
Chen, Jun-Da ; Ueng, Fang-Biau ; Wang, Hsuan-Fu ; Chang, Jui-Chi ; Jeng, Li-Der
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung
fYear :
2008
fDate :
7-10 Dec. 2008
Firstpage :
1
Lastpage :
6
Abstract :
For CDMA system, the severe multiuser and multipath interferences are always present. When the demodulation is coherent, a coherent carrier reference must be generated prior to demodulation. The generation of coherent reference at low signal to noise and interference ratio is difficult. This paper provides the minimum mean square error (MMSE) derivation of an adaptive noncoherent DS/CDMA receiver in multipath channel. It is shown that the performance of the noncoherent adaptive receiver with MDPSK signal can approach that of the coherent receiver with MPSK signal. Besides, the simulations show that when the feedback number increases, the performance of the adaptive noncoherent receiver can be improved.
Keywords :
code division multiple access; least mean squares methods; phase shift keying; radio receivers; CDMA system; DS-CDMA receiver; MPSK signal; coherent carrier reference; interference ratio; minimum mean square error; multipath channel; multipath interferences; multiuser interferences; performance analysis; signal to noise ratio; Demodulation; Feedback; Interference; Mean square error methods; Multiaccess communication; Multipath channels; Noise generators; Performance analysis; Signal generators; Signal to noise ratio; DS-CDMA; decision-feedback differential detection; multipath;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory and Its Applications, 2008. ISITA 2008. International Symposium on
Conference_Location :
Auckland
Print_ISBN :
978-1-4244-2068-1
Electronic_ISBN :
978-1-4244-2069-8
Type :
conf
DOI :
10.1109/ISITA.2008.4895562
Filename :
4895562
Link To Document :
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