Complex Form Bandpass Sampling with Offset Frequency Sampling and Quadrature Component Interpolation for Modulated Signals(<Special Issue>Software Defined Radio Technology and Its Applications)

概要

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This paper proposes complex form BandPass Sampling (BPS) that is suitable for the software radio This BPS utilizes offset frequency sampling and quadrature component interpolation Three types of BPS techniques are first reviewed, which shows effectiveness of the proposed BPS technique The major advantages over the conventional BPS techniques are i) free from the DC offset that is caused by the leak of the sam pling clock harmonics into the received signal, and ii) reduction of alias by the complex number processing in the signal detection Next, detailed description of the BPS operation shows that it requires real-time interpolation for the time alignment of the sampled quadrature component Finally, computer simulation shows that the misalignment generates distortion, and that effective interpolation techniques can reduce the distortion level less than -60dB even for wideband signals
社団法人電子情報通信学会の論文
2003-12-01