Title :
A simulation study of interference suppressing OFDM for UWB systems with multiple users
Author :
Popescu, Dimitric C. ; Yaddanapudi, Prasad
Author_Institution :
Dept. of Electr. Eng., Texas Univ., San Antonio, TX, USA
Abstract :
In this paper we investigate the use of an interference suppressing scheme based on orthogonal frequency division multiplexing (OFDM) for ultra wideband (UWB) radios in a multiuser scenario corresponding to the uplink of a wireless system with multiple users transmitting to a base station. In order to enable decoding of multiple users at the receiver, we employ multicarrier code division multiple access (MC-CDMA) in which distinct users are assigned distinct codes for transmission. Bit error rate (BER) performance of the scheme is evaluated through numerical simulations for additive white Gaussian noise (AWGN), multipath channels, and narrowband interference, with various choices for user codes.
Keywords :
AWGN; OFDM modulation; code division multiple access; error statistics; interference suppression; multipath channels; radiofrequency interference; ultra wideband communication; AWGN; BER; MC-CDMA; OFDM; UWB systems; additive white Gaussian noise; base station; bit error rate; interference suppression; multicarrier code division multiple access; multipath channels; multiple users; narrowband interference; orthogonal frequency division multiplexing; ultra wideband radios; wireless system; AWGN; Base stations; Bit error rate; Decoding; Interference suppression; Multicarrier code division multiple access; Numerical simulation; OFDM; Radiofrequency interference; Ultra wideband technology;
Conference_Titel :
Radio and Wireless Symposium, 2006 IEEE
Print_ISBN :
0-7803-9412-7
DOI :
10.1109/RWS.2006.1615169
