Low-PAPR Hybrid Filter for SC-FDMA

作者：Kamal Shaharyar; Azurdia Meza Cesar A; Tran Nguyen H; Lee Kyesan

来源：IEEE Communications Letters, 2017, 21(4): 905-908.

DOI：10.1109/LCOMM.2016.2617310

• Intersymbol interference (ISI)
• Nyquist-I criterion
• peak-to-average power ratio (PAPR)
• power amplifier
• pulse shaping filters
• SC-FDMA

We propose a hybrid filter to reduce the peak-toaverage power ratio (PAPR) on the transmitter side in a longterm evolution uplink scheme. The design of the proposed filter is based on two key components: a finite impulse response filter and a Nyquist-I pulse. We consider an envelope-constrained filter design to optimize the impulse response of the proposed filter in terms of PAPR reduction. Moreover, we propose a new family of Nyquist-I pulses, the exponential linear pulse, which has a new design parameter that helps reduce PAPR for a given roll-off factor and transmission scheme. Theoretical and numerical results show that the proposed filter outperforms existing filters in terms of PAPR and symbol error rate, and it has a less computationally complex impulse response expression than existing filters for the interleaved subcarrier mode of single-carrier frequency-division multiple access.

• 出版日期2017-4