Title :
The error performance of Gray encoded QPSK and 8-PSK schemes in a fading channel with cochannel interference
Author :
Krishnamurthi, Rajeev ; Gupta, S.C.
Author_Institution :
Qua/Comm Inc., San Diego, CA, USA
fDate :
12/1/1993 12:00:00 AM
Abstract :
Closed-form BER (bit error rate) expressions are derived for Gray-encoded QPSK (quadrature phase shift keying) and 8-PSK schemes using coherent detection in a slow Rayleigh fading narrowband channel with fading cochannel interference. Earlier work has been limited to deriving the approximate BER using the canonical Stein (1961) receiver concept. The symbol error rate (SER) for the QPSK scheme is also derived. The desired signal and the cochannel interferer are both PSK signals, modulated by different baseband pulses with identical signaling rate
Keywords :
coding errors; encoding; fading; phase shift keying; radiofrequency interference; telecommunication channels; 8-PSK; BER; Gray encoded QPSK; SER; baseband pulses; bit error rate; canonical Stein receiver; closed-form expressions; cochannel interference; coherent detection; error performance; fading channel; modulation; narrowband channel; signaling rate; slow Rayleigh fading; symbol error rate; Baseband; Bit error rate; Error analysis; Interchannel interference; Narrowband; Phase detection; Phase shift keying; Pulse modulation; Quadrature phase shift keying; Rayleigh channels;
Journal_Title :
Communications, IEEE Transactions on
