Performance analysis of OFDM systems for broadband power line communications under impulsive noise and multipath effects

The impulsive noise and multipath effects are the main reasons to cause bit errors in power line communications. In this paper, the bit error rate (BER) performance of the orthogonal frequency division multiplexing (OFDM) system under the impulsive noise and multipath effects are theoretically analy...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2005-04, Vol.20 (2), p.674-682
Main Authors: Ma, Y.H., So, P.L., Gunawan, E.
Format: Article
Language:English
Subjects:
Additive white noise
Applied sciences
Background noise
Bit error rate
Bit error rate (BER)
Broadband communication
Colored noise
Exact sciences and technology
Exact solutions
Gaussian noise
Guards
impulsive noise
Intervals
Mathematical analysis
multipath effect
Noise
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
Performance analysis
Power line communications
Power lines
Programmable control
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Summary:The impulsive noise and multipath effects are the main reasons to cause bit errors in power line communications. In this paper, the bit error rate (BER) performance of the orthogonal frequency division multiplexing (OFDM) system under the impulsive noise and multipath effects are theoretically analyzed in terms of closed form formulas. Through the analysis, it is shown that OFDM can mitigate the adverse effect of the impulsive noise and only the heavily disturbed impulsive noise will interfere the BER performance of the OFDM system. It is also shown that the adverse effect of multipath is more serious than that of impulsive noise. In this paper, the guard interval is used to improve the BER performance of the OFDM system. As the longer guard interval is inefficient in using the signal power, the optimum guard interval that can achieve the best BER performance is studied.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2005.844320