SFBC MIMO-OFDM peak-to-average power ratio reduction by polyphase interleaving and inversion

Document Type

Article

Publication Date

4-1-2006

Abstract

Many PAPR reduction schemes have been proposed for OFDM systems. Among these, the signal scrambling methods such as the Partial Transmit Sequences (PTS) [1] and Selective Mapping (SLM) [2] are attractive as they obtain better PAPR property by modifying OFDM signals without distortion. These schemes can also be applied to a SFBC MIMO-OFDM system, which is advantageous for dispersive channels, in a straightforward way by performing signal scrambling on data sequence before it is distributed to the transmit antennas according to employed encoding scheme. Note however that in the case of PTS [1] PAPR reduction in the time domain is not possible, which leads to prohibitively large complexity of such scheme. In this letter we introduce more effective approach, the Polyphase Interleaving and Inversion (PII) PAPR scheme and its reduced complexity version (RC-PII), which are designed to suppress peaks in SFBC-OFDM transmit diversity. © 2006 IEEE.

Identifier

33645832779 (Scopus)

Publication Title

IEEE Communications Letters

External Full Text Location

https://doi.org/10.1109/LCOMM.2006.1613742

ISSN

10897798

First Page

266

Last Page

268

Issue

4

Volume

10

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