Title :
An interference suppressing OFDM system for wireless communications
Author :
Gerakoulis, Diakoumis ; Salmi, Paola
Author_Institution :
AT&T Labs-Res., Florham Park, NJ, USA
Abstract :
The orthogonal frequency division multiplexed (OFDM) system introduced here, termed interference suppressing OFDM (IS-OFDM), has the capabilities of suppressing narrowband interference in wideband wireless applications. The IS-OFDM encodes each transmitted symbol in all frequency bins. Each frequency bin then "contains" all transmitted symbols which are distinguished and separated from each other by orthogonal Hadamard sequences. The IS-OFDM can provide a point-to-point wireless link without spreading the incoming data rate. In addition, the IS-OFDM has all the advantages of the ordinary OFDM, which is shown to be a special case of the IS-OFDM. We present the IS-OFDM system design and evaluate its performance in the presence of narrowband interference and AWGN channel
Keywords :
AWGN channels; OFDM modulation; interference suppression; radio links; radiofrequency interference; AWGN channel; Hadamard sequences; OFDM; interference suppression; narrowband interference; orthogonal frequency division multiplexing; point-to-point wireless link; wireless communications; AWGN channels; Code division multiplexing; Frequency division multiplexing; Interference suppression; Multiaccess communication; Narrowband; OFDM modulation; Sections; Wideband; Wireless communication;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.996900
