Iterative receiver technique for reduced-CP, reduced-PMEPR OFDM transmission

Torres, Paulo; Gusmão, António

http://hdl.handle.net/10400.11/7770

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Authors

Torres, Paulo

Gusmão, António

Abstract(s)

When a low-PMEPR (Peak-to-Mean Envelope Power Ratio) is intended for OFDM (Orthogonal Frequency Division Multiplexing) transmission, a well known solution is to resort to signal processing schemes that involve nonlinear operations (e.g., an appropriate clipping) in the time domain. In this paper, where we consider an OFDM-based trans- mission under a deliberate nonlinear distortion and a com- plementary frequency-domain ﬁltering, we assume that the length of the cyclic preﬁx (CP) is below the channel memory order. In this context, a new iterative receiver technique is proposed, which can cancel both the nonlinear distortion effects and the interblock interference effects, through a mod- iﬁed iterative decision-feedback procedure, simultaneously providing the appropriate CP reconstruction effects. A set of performance results is used to show the practical interest of the proposed approach for power/bandwidth efﬁcient OFDM-based block transmission.

Description

“© © 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”

Keywords

reduced-PMEPR OFDM SC/FDE Cyclic preﬁx

URI

http://hdl.handle.net/10400.11/7770

Citation

P. Torres and A. Gusmao, "Iterative Receiver Technique for Reduced-CP, Reduced-PMEPR OFDM Transmission," 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007, pp. 1981-1985, doi: 10.1109/VETECS.2007.410.