Digital front-end design for ofdm receivers with synchronous if sampling

Yih Min Chen, I. Yuan Kuo

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

Orthogonal frequency-division multiplexing (OFDM) is a favored technique in digital broadband wireless communications due to its easiness in combating highly dispersive transmission channels. In an OFDM receiver using traditional superheterodyne radio-frequency (RF) front-end, the analog intermediate- frequency (IF) output signal is sampled and converted to a digital IF signal at an IF sampling rate adhering to the bandpass sampling theorem. Since the existence of carrier and the difference in sampling rate, a digital front-end which incorporates spectral shifting and sampling rate conversion is required to convert the digital IF signal to a complex baseband signal at a baseband sampling rate adequate for succeeding OFDM demodulation. In this paper, we discuss the design of the digital front-end for superheterodyne OFDM receivers when the IF sampling rate is synchronous to the time base of the transmitter.

原文???core.languages.en_GB???
頁(從 - 到)469-479
頁數11
期刊International Journal of Electrical Engineering
15
發行號6
出版狀態已出版 - 12月 2008

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