Title :
Multicarrier CDMA overlay for ultra-wideband communications
Author :
Wang, Jiangzhou ; Milstein, Laurence B.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, China
Abstract :
In this letter, the performance of multicarrier code-division multiple-access (CDMA) systems is studied in the presence of narrowband interference for future ultra-wideband (UWB) communications. A Nakagami fading channel is assumed, and notch filters along with diversity techniques are used in the multicarrier CDMA receiver. A complete performance analysis of error probability is given. It is shown that when the number of subcarriers jammed by narrowband interference is small, the multicarrier receiver without notch filters can work well, due to the gain of frequency diversity from nonjammed subcarriers. On the other hand, when the number of subcarriers jammed by the narrowband interference is large, using notch filters can improve the multicarrier system performance significantly.
Keywords :
code division multiple access; diversity reception; error statistics; fading channels; jamming; notch filters; radio receivers; radiofrequency filters; ultra wideband communication; Rake receiver; code-division multiple-access system; error probability; fading channel; frequency diversity; multicarrier CDMA overlay; narrowband interference; notch filter; ultrawideband communication; Error probability; Fading; Filters; Frequency diversity; Jamming; Multiaccess communication; Multiple access interference; Narrowband; Performance analysis; Ultra wideband technology; 65; CDMA; Frequency diversity; Nakagami fading; RAKE receiver; UWB; communications; multicarrier code-division multiple access; ultra-wideband;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.836448
