Title :
A space-time model for frequency nonselective Rayleigh fading channels with applications to space-time modems
Author :
Chen, Tai-Ann ; Fitz, Michael P. ; Kuo, Wen-Yi ; Zoltowski, Michael D. ; Grimm, Jimm H.
Author_Institution :
Dept. of Wireless Syst. Core Technol., Lucent Technol., Whippany, NJ, USA
fDate :
7/1/2000 12:00:00 AM
Abstract :
This paper extends the traditional Clarke/Jakes (1968, 1974) model for a frequency flat fading process in a land mobile radio system to facilitate the examination of coherent space-time demodulation systems. The work develops a space-time correlation function using a ring of scatterers model around the mobile unit. The resulting correlation function permits the investigation of a variety of issues concerning base station configurations in space-time systems. The interrelationship of the fading process between the space and the time domain is explored. A detailed example regarding the effects of antenna separation in a receiver diversity system is considered. A set of design rules for interleaving depth and antenna separation in a space-time modem is presented and quantified.
Keywords :
Rayleigh channels; correlation methods; demodulation; diversity reception; error statistics; land mobile radio; modems; phase shift keying; receiving antennas; time-domain analysis; BPSK; Clarke/Jakes model; antenna separation; base station configurations; channel state information; coherent space-time demodulation systems; cross spectrum functions; design rules; frequency flat fading; frequency nonselective Rayleigh fading channels; interleaving depth; land mobile radio system; mobile unit; pairwise symbol error probability; receiver diversity system; scatterers model; space domain; space-time correlation function; space-time model; space-time modems; time domain; Base stations; Demodulation; Fading; Frequency; Interleaved codes; Land mobile radio; Modems; Rayleigh channels; Rayleigh scattering; Receiving antennas;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
