A New Transceiver for OFDM Systems Using Smooth Local Trigonometric Transforms
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概要
- 論文の詳細を見る
This letter proposes a new transceiver for OFDM systems based on Smooth Local Trigonometric Transform (LTT). In our transceiver, the transmitter is realized by firstmodulating the original serial data using a constellation mapper, then feeding the results into the inverse LTT modulator. Unlike the conventional DFT-OFDM system, which always uses the roll cosine function as its window function, the proposed system needs no additional window function for the reason that LTT transform includes a bell-shaped window function by itself. Moreover, each LTT-OFDM symbol has a much more rapid attenuation rate outside of the spectral bandwidth and better spectrum convergence. In the receiver, the original data is recovered by demodulating the received data using forward LTT. Comparative simulation results from the conventional DFT-OFDM system, the system we proposed, and the recently proposed DCT based OFDM system are discussed in terms of bit error rate (BER).
- (社)電子情報通信学会の論文
- 2009-02-01
著者
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CHANG Qing
School of Electronic and Information Engineering of BeiHang University
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Qi Wei
School Of Electronic And Information Engineering Of Beihang University
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TAN Yongbo
School of Electronic and Information Engineering of BeiHang University
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CHEN Dirong
School of Science of BeiHang University
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Qi Wei
School Of Electronic And Information Engineering Of Beihang Univ.
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Chang Qing
School Of Electronic And Information Engineering Of Beihang Univ.
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Qi Wei
School Of Civil And Environmental Engineering Nanyang Technological University
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