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Experimental studies of direction of arrivals using a smart antenna testbed in wireless communication systems
Author(s) -
Jeng ShiannShiun,
Lin HsinPiao,
Tsung ChenWan
Publication year - 2003
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.584
Subject(s) - smart antenna , beamforming , computer science , space division multiple access , base station , telecommunications link , communications system , direction of arrival , antenna array , duplex (building) , antenna (radio) , wireless , testbed , electronic engineering , interference (communication) , channel (broadcasting) , computer network , directional antenna , telecommunications , engineering , genetics , dna , biology
This paper presents some preliminary results from experimental studies on space‐division‐multiple‐access (SDMA) for wireless communications. A smart antenna system utilizing direction‐of‐arrival (DOA)‐based beamforming techniques can enhance signal quality by reducing co‐channel interference from mobiles located at angles spatially distinct from the base station. Adopting both smart uplink and downlink beamforming, a communication system with an antenna array can increase the cell coverage of a base station and significantly boost capacity compared with conventional antenna systems. However, successful implementation of DOA‐based beamforming techniques depends on the DOA characteristics. This paper presented the feasibility of direction finding and DOA variation with respect to frequency. Furthermore, the angle spread was studied for selected environments. The results demonstrate the feasibility of applying proposed smart antenna system utilizing DOA‐based beamforming algorithm for increasing channel capacity and improving system performance in frequency‐division‐duplex (FDD) wireless communication systems. Copyright © 2003 John Wiley & Sons, Ltd.