Title :
Multiuser detection for continuous phase modulation over Rayleigh fading channels
Author :
Bokolamulla, Dhammika ; Aulin, Tor
Author_Institution :
Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
We study multiuser (MU) continuous phase modulation (CPM) over Rayleigh fading channels with a receiver antenna array. An optimum symbol-by-symbol MU detector is derived and its practical implementation with reduced-complexity is considered. According to the numerical results, the MU detector performs very close to a system free of interference by other users, when each user has more than one receiving antenna. For three receiving antennas, this difference is less than 0.25 dB, 0.4 dB, and 0.6 dB for two, three and four users, respectively. Moreover, the proposed system is bandwidth efficient as CPM is a bandwidth efficient modulation scheme, and the MU system only uses the single user CPM bandwidth.
Keywords :
Rayleigh channels; antenna arrays; continuous phase modulation; multiuser detection; receiving antennas; space-time codes; CPM; Rayleigh fading channel; bandwidth efficient modulation; continuous phase modulation; multiuser channel; multiuser detection; optimum symbol-by-symbol MU detector; receiver antenna array; reduced-complexity; space-time code; Antenna arrays; Bandwidth; Continuous phase modulation; Detectors; Fading; Frequency; Interference; Multiuser detection; Phased arrays; Receiving antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.10031