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Title: On the optimum number of OFDM subcarriers in fast Rayleigh fading channels
Authors: Huang, L.C.
Tjhung, T.T. 
Lu, J. 
Keywords: Bit error rate
Fast fading Rayleigh channel
Issue Date: Jun-2001
Citation: Huang, L.C.,Tjhung, T.T.,Lu, J. (2001-06). On the optimum number of OFDM subcarriers in fast Rayleigh fading channels. Journal of Communications and Networks 3 (2) : 142-146. ScholarBank@NUS Repository.
Abstract: In this paper, we consider the problem of selecting the number of subcarriers for an OFDM-MDPSK system when the delay spread of a multipath fading channel varies with the existing mobile environment. In our recent analysis [1], we have shown that there are two distinct BER performance behaviors dependent on whether the guard interval is larger or smaller than the delay spread. In this paper, by associating a probability that relates randomly varying channel delay spread to the designed guard period in the average BER computation, we present a step by step procedure to select the most suitable number of subcarriers, and other important parameters for the OFDM-MDPSK system.
Source Title: Journal of Communications and Networks
ISSN: 12292370
Appears in Collections:Staff Publications

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