The bit error rate (BER) performance of equalised I-Q quadrature phase-shift keying (QPSK) is evaluated for wideband cellular systems. Decision feedback equalisation with the square-root Kalman updating algorithm is employed for I-Q coded systems. A gain of about 6 dB is achieved in favour of the I-Q scheme compared with the conventional Gray-mapped QPSK at a BER of 10–3.
References
-
-
1)
-
J.G. Proakis
.
(1995)
Digital communications.
-
2)
-
P. Ho ,
D. Fung
.
Error performance of interleaved trellis-coded PSK modulationsin correlated Rayleigh fading channels.
IEEE Trans. Commun.
,
12 ,
1800 -
1809
-
3)
-
F. Hsu
.
Square root Kalman filtering for high-speed data received over fadingdispersive HF channels.
IEEE Trans. Inf. Theory
,
5 ,
753 -
763
-
4)
-
Al-Semari ,
T. Fuja
.
I-Q TCM: Reliable communication over the Rayleighfading channel close to the cutoff rate.
IEEE Trans. Inf. Theory
,
1 ,
250 -
262
-
5)
-
Daria, G., Zingarelli, : `Results on fast-Kalman and Viterbi adaptive equalizersfor mobile radio with CEPT/GSM system characteristics', Proc. IEEE GLOBE-COM, 1988, 2, p. 815–819.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19990042
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content/journals/10.1049/el_19990042
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