Title :
Maximum-likelihood synchronisation algorithms for Q/sup 2/PSK
Author :
Acha, V. ; Carrasco, R.A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Staffordshire Univ., Stafford, UK
Abstract :
New maximum-likelihood synchronisation algorithms for quadrature-quadrature phase shift keying (Q 2PSK) signals are presented and evaluated. A brief description of the Q 2PSK modulation scheme is given. The digital implementation of the algorithms used in the simulation of a constant-envelope Q 2PSK modem system and their computational loads are presented. Bit error rate performance of the modem system has been evaluated. Bit-by-bit and symbol-by-symbol detection receivers are simulated and evaluated. Phase and timing variance obtained with the new synchronisation procedures have been calculated and are given.<>
Keywords :
maximum likelihood estimation; modems; phase shift keying; synchronisation; BER performance; MLE; Q/sup 2/PSK; bit-by-bit detection receivers; constant envelope modem; digital implementation; maximum-likelihood synchronisation algorithms; modulation scheme; phase variances; quadrature-quadrature phase shift keying; symbol-by-symbol detection receivers; timing variance;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
