Reduction of amplitude clipping level with OFDM/TDM

Haris Gacanin, Shinsuke Takaoka, Fumiyuki Adachi

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

The OFDM signals have a problem of high peak-to-average power ratio (PAPR). Hence, a large transmit-power backoff or amplitude clipping is required. The amplitude clipping causes signal degradation and the BER performance increases. A trade-off between the PAPR reduction and the BER performance is present; the PAPR reduces as the level of clipping reduces, but the BER degrades due to signal distortion. Recently, we proposed OFDM combined with time division multiplexing (OFDM/TDM) to alleviate the high PAPR problem, while achieving better BER performance than OFDM. In this paper, a theoretical bit error rate (BER) analysis of clipped OFDM/TDM system in a frequency-selective fading channel is developed. The average BER performance is evaluated by numerical computation using the derived conditional BER and by computer simulation. It is shown that OFDM/TDM can significantly reduce the amplitude clipping level and the required average signal energy per bit-to-AWGN power spectrum density ratio Eb/N0 for the given BER in comparison to conventional OFDM.

本文言語English
ホスト出版物のタイトル2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
ページ1558-1562
ページ数5
DOI
出版ステータスPublished - 2006
外部発表はい
イベント2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada
継続期間: 2006 9 252006 9 28

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Other

Other2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
国/地域Canada
CityMontreal, QC
Period06/9/2506/9/28

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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