Implementation of SDR-Based Digital IF Channelizer/De-Channelizer for Multiple CDMA Signals

Sungbin IM  Woncheol LEE  Chonghoon KIM  Yoan SHIN  Seung Hee LEE  Joon CHUNG  

IEICE TRANSACTIONS on Communications   Vol.E83-B   No.6   pp.1282-1289
Publication Date: 2000/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
software defined radio,  IS-95 CDMA,  wideband channelizer/de-channelizer,  polyphase filter bank,  

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This paper presents the results on IF/baseband up/down direct digital conversion and multiple channel analysis/synthesis software defined radio modules which are implemented using high speed ADC, DAC and FPGA, for IS-95 code division multiple access (CDMA) systems. The implemented system can directly down-convert multiple channel IS-95 CDMA IF signals to the baseband, and selectively analyze specific channel signals based on polyphase analysis filter bank techniques. Moreover, the analyzed baseband signals of multiple channels can be directly up-converted and synthesized in the same system. We have deployed the implemented system in IS-95 CDMA optical digital repeaters for PCS applications.