Abstract
Unitary space-time modulation (USTM) fits for rapid Rayleigh flat fading channels as it can realize wireless communication when neither the transmitter nor the receiver knows the channel state information (CSI). However, an intrinsic problem is that only when the signal-to-noise ratio (SNR) is high can it give an ideal bit error rate (BER) performance. The existing bit-wise processing scheme of the combination of turbo code and USTM improves the BER performance and results in an unacceptable calculation complexity, storage and time delay problem. In this paper, we propose a multiary processing scheme and its corresponding multiary MAP decoding algorithm. Simulation results verify that our scheme can reduce the system complexity while keep a good BER performance. Furthermore, we present the first analysis of the reason for the BER performance deterioration of the combination scheme at low SNR with the help of the definition of USTM.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
