Title :
Demodulation of space-time codes in the presence of interference
Author :
Larsson, E.G. ; Liu, J. ; Li, J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA
fDate :
5/24/2001 12:00:00 AM
Abstract :
Two interesting space-time coding schemes for communication systems are the recently proposed differential space-time modulation (DSTM) scheme and the differential space-code modulation (DSCM) scheme. DSCM gives better performance than DSTM by exploiting the spatial degree-of-freedom to suppress interference. We show that, for DSCM, a maximum-likelihood (ML) demodulation approach, based on a deterministic channel model, improves the performance significantly compared to a previously proposed stochastic channel model based method
Keywords :
codes; demodulation; error statistics; interference suppression; maximum likelihood decoding; BER; DSCM scheme; DSTM scheme; ML demodulation; bit error rate; communication systems; deterministic channel model; differential space-code modulation scheme; differential space-time modulation scheme; interference suppression; maximum-likelihood demodulation; space-time codes; space-time coding schemes; spatial degree-of-freedom;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010471
