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Journal Article
A Two-Stage Radix-4 Viterbi Decoder for Multiband OFDM UWB Systems
- Authors
- Sung Woo Choi, Kyu Min Kang, Sang Sung Choi
- Issue Date
- 2008-12
- Citation
- ETRI Journal, v.30, no.6, pp.850-852
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- This letter presents a power efficient 64-state Viterbi decoder (VD) employing a two-stage radix-4 addcompare-select architecture. A class of VD architectures is implemented, and their hardware complexity, maximum operating speed, and power consumption are compared Implementation results show that the proposed VD architecture is suitable for multiband orthogonal frequency-division multiplexing (MB-OFDM) ultra-wideband (UWB) systems, which can support the data rate of 480 Mbps even when implemented using 0.18-μm CMOS technology.
- KSP Keywords
- CMOS Technology, Hardware complexity, MB-OFDM, Multiband OFDM, Operating speed, Orthogonal frequency division Multiplexing(OFDM), Power Consumption, Power-efficient, Radix-4, Two-Stage, UWB system