Impact of imperfect channel estimation on OFDM/TDM performance

Shinsuke Takaoka, Haris Gacanin, Fumiyuki Adachi

研究成果: Conference article査読

11 被引用数 (Scopus)


Orthogonal frequency division multiplexing (OFDM) combined with time division multiplexing (TDM), called OFDM/TDM, can bridge the conventional OFDM and single-carrier (SC) transmission by using the frequency-domain equalization (FDE). Accurate channel estimation is required for FDE. A well-known channel estimation scheme is pilot-based channel estimation that uses periodically transmitted pilot signals. If channel estimation error is present, the inter-symbol interference (ISI) is produced in OFDM/TDM. In this paper, we apply a Gaussian approximation to the channel estimation error and theoretically investigate the impact of the imperfect channel estimation on the average bit error rate (BER) performance of OFDM/TDM. It is shown by the numerical evaluation that the channel estimation error degrades more the BER performance when OFDM/TDM approaches SC.

ジャーナルIEEE Vehicular Technology Conference
出版ステータスPublished - 2005 10 17
イベント2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden
継続期間: 2005 5 302005 6 1

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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