Title :
A new FQPSK modem/radio architecture for PCS and mobile communications
Author :
Yanpeng Guo ; Feher, K.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
fDate :
28 Nov- 2 Dec 1994
Abstract :
A newly developed constant envelope FQPSK modem/radio architecture, which employs a modified double-jump (DJ) filter in the cross-correlated FQPSK system, is proposed for personal communications systems (PCS) and mobile radio applications. The power efficiency and spectrum efficiency of this system are investigated in a non-linear amplified (NLA) environment. The bit error rate (BER) performance is evaluated in a noisy Rayleigh fading channel. We demonstrate that with the simplest threshold detectors (binary robust eye diagrams in I and Q channels), this system is 4-7 dB more power efficient than the US digital cellular standard π/4-QPSK, 50%-100% more spectrally efficient than the European standard GMSK
Keywords :
Rayleigh channels; coding errors; correlation theory; error statistics; fading; filtering theory; land mobile radio; modems; personal communication networks; quadrature phase shift keying; radio spectrum management; signal detection; BER performance; FQPSK modem/radio architecture; I channels; PCS; Q channel; binary robust eye diagrams; bit error rate; constant envelope architecture; cross-correlated FQPSK system; mobile radio communications; modified double-jump filter; noisy Rayleigh fading channel; nonlinear amplified environment; personal communications systems; power efficiency; spectrum efficiency; threshold detectors; Bit error rate; Computer architecture; Digital communication; Digital filters; Laboratories; Land mobile radio; Mobile communication; Modems; Personal communication networks; Telephone sets;
Conference_Titel :
Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1820-X
DOI :
10.1109/GLOCOM.1994.512809
