Title :
Viterbi decoding differential detection with space diversity for 16DAPSK on Rayleigh fading channels
Author :
Ohtsuki, Tomoaki
Author_Institution :
Dept. of Electr. Eng., Sci. Univ. of Tokyo, Japan
Abstract :
This paper proposes Viterbi decoding differential detection (Viterbi decoding DD) with space diversity for 16DAPSK. Power ratio combing (PRC) is employed as a diversity combining scheme. The bit error probability performance is evaluated on Rayleigh fading channels by the computer simulation. It is shown that extending the length of a trellis path is effective for bits encoded in phase by 8DPSK to improve the bit error probability, while not effective for bits encoded in amplitude by 2DASK. However, Viterbi decoding DD with NA=2 for bits encoded in amplitude by 2DASK can achieve better performance than conventional DD. The proposed system with the lengths of trellis path N A=2 for bits encoded in amplitude by 2DASK and NP=100 for bits encoded in phase by 8DPSK is shown to achieve gains for the DD with space diversity systems when the fading is fast or not. Therefore, the Viterbi decoding DD with PRC diversity is shown to be effective for 16DAPSK to improve the bit error probability performance on Rayleigh fading channels
Keywords :
Rayleigh channels; Viterbi decoding; amplitude shift keying; coding errors; demodulation; differential phase shift keying; diversity reception; error statistics; fading; land mobile radio; probability; 16DAPSK; 2DASK; 8DPSK; Rayleigh fading channels; Viterbi decoding differential detection; bit error probability performance; computer simulation; diversity combining; fast fading; personal communication systems; power ratio combing; space diversity systems; trellis path; Additive white noise; Bandwidth; Diversity reception; Error probability; Fading; Maximum likelihood decoding; Partial response channels; Performance gain; Phase detection; Viterbi algorithm;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.627026