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Statistic-Based Magnitude Determination of Impulse Sample in Impulse Postfix OFDM Systems Namseok CHANG Na-young KIM Joonhyuk KANG Youngok KIM Hyunbeom LEE Publication IEICE TRANSACTIONS on Communications Vol.E90-B No.12 pp.3716-3720 Publication Date: 2007/12/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e90-b.12.3716 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: channel estimation, OFDM, frequency equalization, ICI cancellation, Full Text: PDF(304.6KB)>>
Summary: Instead of pilot tones, the impulse sample is exploited for channel estimation in Impulse Postfix OFDM systems [1]. As the magnitude of impulse sample is increased, the accuracy of channel estimation can be enhanced, but it may significantly increase the PAPR of generated OFDM symbols. In this letter, based on the statistical analysis of the generated OFDM symbol, we propose a decision scheme for determining the magnitude of impulse sample. By using the proposed scheme, we can determine the magnitude of impulse sample that provides the enhancement of BER performance as well as the avoidance of PAPR increase. The validation of the proposed scheme is demonstrated by computer simulations. | |||||
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