Title :
Cyclic Wiener filtering based multirate DS-CDMA receivers
Author :
Sabharwal, Ashutosh ; Mitra, Urbashi ; Moses, Randolph
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
Detection methods for multiple rate direct sequence code division multiple access (DS-CDMA) signalling are addressed. Attention is focused on the development of receivers based on the minimum mean squared error (MMSE). Due to the cyclostationarity of the multirate signal, a representation of the multirate signal in terms of the Fourier basis is possible. This expansion facilitates construction of the MMSE receivers. Both variable spreading gain as well as variable chipping rate DS-CDMA access schemes are considered. For the multiple chipping rate system, the effect of the front-end filter bandwidth on the receiver performance is studied. Simulation results are provided to compare the performance of the proposed receivers
Keywords :
Fourier analysis; Wiener filters; code division multiple access; filtering theory; least mean squares methods; multiuser channels; radio receivers; signal detection; signal representation; spread spectrum communication; DS-CDMA signalling; Fourier basis; MMSE receivers; cyclic Wiener filtering; cyclostationary multirate signal; detection methods; direct sequence code division multiple access; front-end filter bandwidth; minimum mean squared error; multiple chipping rate system; multirate DS-CDMA receivers; multirate signal representation; receiver performance; simulation results; variable chipping rate; variable spreading gain; Bandwidth; Direct-sequence code-division multiple access; Frequency; Gain; Multiaccess communication; Multipath channels; Proposals; Wideband; Wiener filter; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.796849
