Title :
Near-far resistant successive interference cancellation detector in UWB systems
Author :
Cheng, Chia-Hsin ; Wen, Jyh-Homg
Author_Institution :
Dept. of Comput. & Commun., Chaoyang Univ. of Technol., Taichung
Abstract :
Similar to code-division multiple access (CDMA) systems, UWB systems used for multiple access communication environments have the near-far problem, which degrades system performance. To overcome this drawback, several advanced receiver structures have been proposed. Unlike the conventional UWB receiver which treats multiple access interference (MAI) as if it were AWGN, multiuser receivers treat MAI as additional information to aid in detection. We present the multistage successive interference cancellation (SIC) detectors in our proposed orthogonal on-off (O3)-based structure along with a one-shot detector to solve near-far problem and compare the most discussed receiver structures: the linear decorrelating detector (LDD) and the linear minimum mean squared error (LMMSE) detector.
Keywords :
code division multiple access; interference suppression; least mean squares methods; multiuser detection; ultra wideband communication; CDMA system; UWB system; code-division multiple access; linear decorrelating detector; linear minimum mean squared error detector; multiple access communication; multiple access interference; multistage successive interference cancellation; multiuser receiver; ultra wideband system; Bit error rate; Decorrelation; Degradation; Detectors; Interference cancellation; Multiaccess communication; Multiple access interference; Multiuser detection; Silicon carbide; System performance; UWB; multistage detection; near-far resistance;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4684968
