The construction of space-time codes for wireless cooperative communications is investigated by considering a pragmatic approach based on the concatenation of convolutional codes and BPSK/QPSK modulation to obtain cooperative codes for relay networks. We also derive the pairwise error probability, an asymptotic bound for frame error probability and a design criterion to optimize both diversity and coding gain. This framework is useful to characterize the behavior of cooperative pragmatic space-time codes (CP-STC) and to set up a code search procedure to obtain good pragmatic space-time codes (P-STC) with overlay construction (COP-STC) which are suitable for cooperative communication with a variable number of relays in quasi static channel. We find that P-STCs perform quite well in block fading channels, including quasi-static channel, even with a low number of states and relays, despite the fact that the implementation of P-STC requires common convolutional encoders and Viterbi decoders with suitable generators and rates, thus having low complexity.

A. Conti, V. Tralli, M. Chiani (2008). Cooperative relaying with pragmatic space-time codes. PISCATAWAY : IEEE.

Cooperative relaying with pragmatic space-time codes

CHIANI, MARCO
2008

Abstract

The construction of space-time codes for wireless cooperative communications is investigated by considering a pragmatic approach based on the concatenation of convolutional codes and BPSK/QPSK modulation to obtain cooperative codes for relay networks. We also derive the pairwise error probability, an asymptotic bound for frame error probability and a design criterion to optimize both diversity and coding gain. This framework is useful to characterize the behavior of cooperative pragmatic space-time codes (CP-STC) and to set up a code search procedure to obtain good pragmatic space-time codes (P-STC) with overlay construction (COP-STC) which are suitable for cooperative communication with a variable number of relays in quasi static channel. We find that P-STCs perform quite well in block fading channels, including quasi-static channel, even with a low number of states and relays, despite the fact that the implementation of P-STC requires common convolutional encoders and Viterbi decoders with suitable generators and rates, thus having low complexity.
2008
Proc. IEEE Int. Conf. on Commun. Workshops
354
359
A. Conti, V. Tralli, M. Chiani (2008). Cooperative relaying with pragmatic space-time codes. PISCATAWAY : IEEE.
A. Conti; V. Tralli; M. Chiani
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/72265
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