Title :
Wideband characterization of wireless channels for smart antenna applications
Author :
Mostafa, Raqibul ; Dietze, Kai ; Ertel, Richard B. ; Dietrich, Carl ; Reed, Jeffrey H. ; Stutzman, Warren L.
Author_Institution :
Mobile Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Coherence bandwidth is an important propagation parameter that has direct impact on the design and performance of a wireless communications link contemplating performance enhancement features like smart antenna applications. This paper presents wideband characterization for indoor and outdoor-to-indoor channels and wideband vector channel measurements for an indoor environment. The results show that the coherent bandwidth of about 10 MHz associated with indoor channel can accommodate diversity operations for wideband CDMA (W-CDMA) system. In addition, a study of the envelope cross-correlation points to the feasibility of a smart antenna system. For outdoor-to-indoor channel, the coherence bandwidth indicated that some additional temporal processing would be necessary for a W-CDMA system. Existing narrowband systems, however, would suffice to use simple diversity techniques in such a channel.
Keywords :
adaptive antenna arrays; broadband networks; code division multiple access; coherence; diversity reception; fading channels; indoor radio; multipath channels; 10 MHz; code division multiple access; coherence bandwidth; indoor channels; outdoor-to-indoor channels; smart antenna applications; wideband CDMA system; wideband characterization; wideband vector channel measurements; wireless communications link; Antenna arrays; Antenna measurements; Antennas and propagation; Bandwidth; Broadband antennas; Diversity reception; Fading; Frequency measurement; Multiaccess communication; Wideband;
Conference_Titel :
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings
Print_ISBN :
0-7803-7829-6
DOI :
10.1109/RAWCON.2003.1227903
