TY - GEN
T1 - Viterbi decoder for high-speed ultra-wideband communication systems
AU - Tang, Jun
AU - Parhi, Keshab K
PY - 2005/1/1
Y1 - 2005/1/1
N2 - The ultra-wideband (UWB) communication systems have attracted both academic research and commercial interests due to their potential high throughput and precise ranging capability. Convoluitonal codes are widely used in different proposals for the high-speed UWB communication systems. In this paper, a novel Viterbi decoder architecture is studied for the multiband orthogonal frequency division multiplexing (MB-OFDM) UWB system [1]. In the Viterbi decoder, sliding block, 2-step lookahead and 2 parallel techniques are combined to achieve the highest desired data rate. For lower data rates, it is possible to disable some parts of the decoder for power saving by proper analysis of the effects of puncturing on word length and trace back length. At the same time, in add-compare-select (ACS) unit, pipelined most-significant bit (MSB) first ACS unit is also utilized to shorten the length of the critical path.
AB - The ultra-wideband (UWB) communication systems have attracted both academic research and commercial interests due to their potential high throughput and precise ranging capability. Convoluitonal codes are widely used in different proposals for the high-speed UWB communication systems. In this paper, a novel Viterbi decoder architecture is studied for the multiband orthogonal frequency division multiplexing (MB-OFDM) UWB system [1]. In the Viterbi decoder, sliding block, 2-step lookahead and 2 parallel techniques are combined to achieve the highest desired data rate. For lower data rates, it is possible to disable some parts of the decoder for power saving by proper analysis of the effects of puncturing on word length and trace back length. At the same time, in add-compare-select (ACS) unit, pipelined most-significant bit (MSB) first ACS unit is also utilized to shorten the length of the critical path.
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U2 - 10.1109/ICASSP.2005.1416234
DO - 10.1109/ICASSP.2005.1416234
M3 - Conference contribution
AN - SCOPUS:33646820069
SN - 0780388747
SN - 9780780388741
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - V37-V40
BT - 2005 IEEE ICASSP '05 - Proc. - Design and Implementation of Signal Proces.Syst.,Indust. Technol. Track,Machine Learning for Signal Proces. Education, Spec. Sessions
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05
Y2 - 18 March 2005 through 23 March 2005
ER -