Compressed Sensing Based Channel Estimation in ISDB-T System without Cyclic Prefix

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  • FERDIAN Rian
    Graduate School of Information Science, Nara Institute of Science and Technology
  • HOU Yafei
    Graduate School of Information Science, Nara Institute of Science and Technology
  • OKADA minoru
    Graduate School of Information Science, Nara Institute of Science and Technology

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Description

Integrated Service Digital Broadcasting Terrestrial (ISDB-T) transmission system is based on OFDM technique which requires cyclic prefix (CP) and pilot tones for channel estimation. Beside data sub-carriers, the usage of CP and pilot tones occupies the ISDB-T bandwidth up to 25%. However, CP is required to mitigate the inter-symbol interference (ISI) and interblock interference (IBI) and pilot tones are required to estimate the channel response information in order to equalize the multipath effect. Recently, a wireless communication scheme without CP by using chained turbo of equalization (CHATUE) technique was proposed. Furthermore, in term of channel estimation, compressed sensing (CS) has become a prominent technique that offers better performance with less pilot tones. In this paper, we proposed a channel estimation scheme for ISDB-T system without CP using CS technique. The pilot tones are inserted at several lowest value intersections location in the previous and post symbol interferences. The final result provides an ISDB-T system with more than 90% spectrum efficiency.

Journal

  • ITE Technical Report

    ITE Technical Report 40.4 (0), 29-32, 2016

    The Institute of Image Information and Television Engineers

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