Multidimensional 16-QAM labeling of BI-STCM-ID over 2x2 MIMO channel
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Protection matching: a new scheduling rule for improved design of BICM-ID systems
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Multilayer space-time error correcting codes
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Boosted-OFDM scheme for 802.11n WLANs
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Labeling optimization of differential unitary space-time modulation
CAR'10 Proceedings of the 2nd international Asia conference on Informatics in control, automation and robotics - Volume 2
On the suitability of gray bit mappings to outer channel codes in iteratively decoded BICM
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
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We consider the design of iteratively decoded bit-interleaved space-time coded modulation (BI-STCM) over fast Rayleigh-fading channels with Nt transmit and Nr receive antennas. We propose the design criterion to achieve the largest asymptotic coding gain inherited in the constellation labeling. In particular, for orthogonal space-time block codes, the labeling design criterion reduces to maximizing the (-NtNr)th power mean of the complete set of squared Euclidean distances associated with all "error-free feedback" events in the constellation. Based on this power mean criterion, we show that the labeling optimization problem falls into the category of quadratic assignment problems for constellations of any shape and with an arbitrary number of transmit and receive antennas. For a set of practical values of Nt and Nr, we present optimal labeling maps for 8-PSK, 16-QAM, and 64-QAM constellations.