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One-Step Backtracking Algorithm Based on Viterbi Algorithm in GMSK Demodulation
- Source :
- ICSPCC
- Publication Year :
- 2020
- Publisher :
- IEEE, 2020.
-
Abstract
- Viterbi algorithm is a commonly used algorithm for Gaussian filtered minimum frequency shift keying (GMSK) demodulation, but there exist some problems such as large delay, high overhead, and data overflow in the hardware implementation. Aiming at the problems of delay and overhead, we propose a novel update rule to optimize the stored transfer-state information table and realize one-step backtracking in this paper. It also ensures the realization of pipeline operation, reduces demodulation delay, and saves hardware resources. Furthermore, we adopt combinational logic to perform pre-decision, which not only satisfies the timing requirements, but also achieves the anti-overflow. The hardware implementation results demonstrate the feasibility and correctness of the design.
- Subjects :
- Combinational logic
Correctness
Frequency-shift keying
Backtracking
Computer science
Pipeline (computing)
05 social sciences
Minimum-shift keying
Viterbi algorithm
01 natural sciences
010305 fluids & plasmas
symbols.namesake
Computer engineering
0502 economics and business
0103 physical sciences
symbols
Demodulation
Overhead (computing)
050203 business & management
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2020 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)
- Accession number :
- edsair.doi...........69dbb6cd25f0b9927d44dd69252076f4