A new equivalent model for deriving the bit error rate (BER) of quadrature phase-shift keying (QPSK), offset QPSK (OQPSK), and minimum shift keying (MSK) signals transmitted over hard-limited channels in the presence of up-link intersymbol interference (ISI) and CW interference (CWI) is introduced. In the equivalent model the up-link and down-link are interchanged in order to avoid the complicated expectation due to the up-link ISI at the hard-limiter output. The analysis is based on the moment technique and the Gram-Charlier expansion. Numerical results of the BER show that the large bandwidth-symbol time product (BT) or the existence of CWI makes MSK preferable compared with QPSK or OQPSK.
Intersymbol and CW Interference in QPSK, OQPSK, and MSK Hard-Limiting Satellite Systems
IEEE Transactions on Aerospace and Electronic Systems ; AES-22 , 1 ; 91-97
01.01.1986
1008036 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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