PAR Reduction using Adaptive Mapping and Recursive Partial Sequence Method

L. Wang and C. Tellambura (Canada)


Modulation, OFDM, PAR Reduction, Adaptive Mapping


We propose a PAR reduction technique for OFDM systems. By adaptively mapping an M-point constellation to a 2M point constellation, this technique can obtain extra freedom to reduce the PAR. This technique does not require any side information at the receiver, which is a great advan tage compared to other techniques. In this paper, a recur sive partial sequence method is also proposed to find a sub optimal solution with significantly lowered computational complexity. Simulations show that the proposed technique can significantly reduce the PAR, and its performance is better than the PTS technique.

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