In this paper we prove that trace-orthogonal space-time coding provides a necessary and sufficient condition for information loss-less coding in a multiple access system, where each user encodes its own symbols independently of the other users. Then, we show that the sub-optimal MMSE decoder can be implemented very simply as a set of scalar decoders and we prove that, under the assumption of using the (sub-optimal) MMSE decoder, the traceorthogonal design with scaled unitary coding matrices yields minimum BER for each user. © 2005 IEEE.
Trace orthogonal space-time coding for multiuser systems / Barbarossa, Sergio; A., Fasano. - III:(2005), pp. iii/1093-iii/1096. (Intervento presentato al convegno International Conference on Acoustic Speech and Signal Processing (ICASSP) 2005 tenutosi a Philadelphia; United States nel March 2005) [10.1109/ICASSP.2005.1415904].
Trace orthogonal space-time coding for multiuser systems
BARBAROSSA, Sergio;
2005
Abstract
In this paper we prove that trace-orthogonal space-time coding provides a necessary and sufficient condition for information loss-less coding in a multiple access system, where each user encodes its own symbols independently of the other users. Then, we show that the sub-optimal MMSE decoder can be implemented very simply as a set of scalar decoders and we prove that, under the assumption of using the (sub-optimal) MMSE decoder, the traceorthogonal design with scaled unitary coding matrices yields minimum BER for each user. © 2005 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
