Abstract
Block coded 8-phase differentially phase shift keyed (8-DPSK) modulations for the time selective Rayleigh fading channel are presented. These block coded modulations (BCMs) are based on multi-level code constructions and utilize short binary block codes as building blocks. All the block codes presented have a time diversity of at least 2. These codes are suited for communication systems with severe delay constraints such as speech transmission over digital cellular radio links. Block codes of length 4 to 16 symbols and rates of 1-3/4 to 2-9/16 bits/symbol are constructed using low complexity component block codes. The proposed schemes provide 10-14 dB channel SNR (signal-to-noise ratio) gain over uncoded 4-DPSK modulations at a bit error rate of 10/sup -3/. Additional gain is also obtained for a fraction of the data due to the unequal error protection nature of these codes. >
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.