A new PAPR reduction in OFDM-WLAN systems by hybrid algorithm of PTS and APPR methods

Pradabpet, Chusit; Yoshizawa, Shingo; Miyanaga, Yoshikazu; Dejhan, Kobchai

doi:10.1109/apcc.2007.4433523

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…In Fig.9, the defmition of IBO is shown in (7). The proposed method shows better BER than original OFDM signal, 2-CAPPR and conventional PTS.…”

Section: B Ber Performancementioning

confidence: 78%

“…They are listed in Table 1 [7], [10). The modulation signal IxU)1 is used in CAPPR normalized to maximum equal "I", the defmition of dth is target value normalized to 0.90.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The modified input data are then fed to CAPPR process[7]-[S]. The CAPPR process which used APPR modules are cascade with connected.…”

mentioning

confidence: 99%

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Phase rotation optimization in hybrid of PTS-CAPPR method by GA for PAPR reduction in OFDM systems

Pradabpet

Yoshizawa

Miyanaga

2010

The 2010 International Conference on Green Circuits and Systems

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In this paper, we propose a new PAPR reduction using the hybrid of a partial transmit sequences (PTS) and cascade adaptive peak power reduction (CAPPR) methods with genetic algorithm (GA). These methods are used in an orthogonal frequency division multiplexing (OFDM) system. The OFDM employs orthogonal sub-carriers for data modulation. These sub-carriers unexpectedly present a large peak to average power ratio (PAPR) in some cases. A proposed reduction method consists of these two methods and realizes both advantages at the same time. The proposed method when number of sub-block increases, PAPR is gettin g small. However, the calculation cost of its selection must be considerably large. We introduce GA method, the total calculation cost becomes drastically reduced.The parameter for simulation used standard WLAN in IEEE 802.11a system. In simulation results, the proposed method shows the improvement on P APR and also reveals the high performance on bit error rate (BER) of an OFDM system.

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“…In Fig.9, the defmition of IBO is shown in (7). The proposed method shows better BER than original OFDM signal, 2-CAPPR and conventional PTS.…”

Section: B Ber Performancementioning

confidence: 78%

“…They are listed in Table 1 [7], [10). The modulation signal IxU)1 is used in CAPPR normalized to maximum equal "I", the defmition of dth is target value normalized to 0.90.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%