An adaptive modulation scheme for simultaneous voice and data transmission over fading channels.

We propose a new adaptive modulation technique for simultaneous voice and data transmission over fading channels and study its performance. The proposed scheme takes advantage of the time-varying nature of fading to dynamically allocate the transmitted power between the inphase (I) and quadrature (Q...

Полное описание

Библиографические подробности
Опубликовано в::	IEEE Journal on selected areas in communications 17, 5 (1999).
Главный автор:	Alouini, M.-S
Формат:	Статья
Язык:	English
Предметы:	BER. BPSK. I channel. M-AM. Nakagami-m fading channels. PCS. Q channel. Rayleigh fading. SNR. Adaptive modulation. Average allocated power. Average bit error rate. Average signal-to-noise ratio. Channel conditions. Closed-form expressions. Data communications. Data throughput. Delay requirements. Fixed-rate binary phase shift keying. High average spectral efficiency. Inphase channel. Mobile communications. Outage probability. Performance. Quadrature channel. Simulation results. Simultaneous voice/data transmission. Time-varying fading. Transmitted power allocation. Variable-power voice transmission. Variable-rate M-ary amplitude modulation.