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PAPR reduction of OFDM signals using partial transmit sequence: an optimal approach using sphere decoding

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3 Author(s)
Alavi, A. ; Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada ; Tellambura, C. ; Fair, I.

Partial transmit sequence (PTS) is a promising technique for peak-to-average-power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. Computation of optimal PTS weight factors via exhaustive search requires exponential complexity in the number of subblocks; consequently, many suboptimal strategies have been developed to date. In this letter, we introduce an efficient algorithm for computing the optimal PTS weights that has lower complexity than exhaustive search.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 11 )

Date of Publication:

Nov. 2005

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