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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
Publication Date: 2000/06/25
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,
Full Text: PDF(1.2MB)>>
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.