One of the major drawback of orthogonal frequency-division multiplexing (OFDM) systems is the large Peak-to-Average power Ratio (PAR) of the transmit signal. High levels of PAR may be a limiting factor for power line communication (PLC) where regulatory bodies have fixed the maximum amount of transmit power. Partial transmit sequence (PTS) is a well-known solution for PAR reduction, but its effectiveness depends on an accurate, and possibly error-free, exchange of side information (SI) between the transmitter and the receiver. In this article, a new maximum likelihood (ML) algorithm for joint decoding of trellis code modulation (TCM) and detection of PTS is presented. The proposed algorithm exploits the redundancy introduced by the TCM code to estimate the correct PTS, and represents a practical solution to avoid the explicit insertion of SI into the OFDM signal. The proposed algorithm has been assessed by bit-error rate (BER) simulation, showing a good performance over additive white Gaussian noise (AWGN) channels and amplifier nonlinearities.

Joint decoding of TCM and detection of PTS side information: a multiple trellis solution / Pighi, Riccardo; Raheli, Riccardo. - (2007), pp. 342-347. ((Intervento presentato al convegno IEEE Intern. Symp. Power-Line Commun. and Its Applications (ISPLC 2007) tenutosi a Pisa, Italy nel March 2007 [10.1109/ISPLC.2007.371148].

Joint decoding of TCM and detection of PTS side information: a multiple trellis solution

PIGHI, Riccardo;RAHELI, Riccardo
2007-01-01

Abstract

One of the major drawback of orthogonal frequency-division multiplexing (OFDM) systems is the large Peak-to-Average power Ratio (PAR) of the transmit signal. High levels of PAR may be a limiting factor for power line communication (PLC) where regulatory bodies have fixed the maximum amount of transmit power. Partial transmit sequence (PTS) is a well-known solution for PAR reduction, but its effectiveness depends on an accurate, and possibly error-free, exchange of side information (SI) between the transmitter and the receiver. In this article, a new maximum likelihood (ML) algorithm for joint decoding of trellis code modulation (TCM) and detection of PTS is presented. The proposed algorithm exploits the redundancy introduced by the TCM code to estimate the correct PTS, and represents a practical solution to avoid the explicit insertion of SI into the OFDM signal. The proposed algorithm has been assessed by bit-error rate (BER) simulation, showing a good performance over additive white Gaussian noise (AWGN) channels and amplifier nonlinearities.
1424410908
Joint decoding of TCM and detection of PTS side information: a multiple trellis solution / Pighi, Riccardo; Raheli, Riccardo. - (2007), pp. 342-347. ((Intervento presentato al convegno IEEE Intern. Symp. Power-Line Commun. and Its Applications (ISPLC 2007) tenutosi a Pisa, Italy nel March 2007 [10.1109/ISPLC.2007.371148].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/1633400
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