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Partial transmit sequence (PTS) is an effective technique to reduce the peak-to-average power ratio (PAPR) for orthogonal frequency division multiplexing (OFDM) transmitter. However, selecting the optimal parameters for the PTS is very complex since it requires an exhaustive search of all possible weighting factors whose number grows exponentially with the number of subblocks. An improved particle...
The major drawback of orthogonal frequency division multiplexing (OFDM) is its high peak-to-average power ratio (PAPR). The partial transmit sequences (PTS) method is well known for PAPR reduction, but its exhaustive search of phase factors causes high computational complexity. To overcome this problem, a Tabu search algorithm is proposed to reduce the complexity by choosing the weighting factors...
Partial transmit sequence (PTS) is an efficient algorithm to solve the problem of high peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM), but its exhaustive search of phase factors results in high computational complexity. A PTS algorithm based on cyclic iteration (C-IPTS) is proposed to solve this problem. In the proposed algorithm, the phase factor achieved...
A new phasing scheme to achieve the lowest peak-to-average power ratio (PAPR) of OFDM system is presented in this paper, which is based on a global optimization combination of the initial phases using particle swarm optimization (PSO). The particle swarm optimization is applied to search the optimal combination of phase factors, which can achieve the OFDM signals with low PAPR and reduce the computational...
Selective mapping algorithm is proposed to reduce the peak-to-average power ration (PAPR) in MIMO-OFDM system. It is proved that the conjugate symbols on two antennas have the same PAPR property with orthogonal space-time block coded (STBC). By using the characteristic, the computational complexity cost and the side information (SI) is significantly reduced compared with the concurrent SLM algorithm...
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