Title | ||
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Experiment And Simulation Results Of Adaptive Antenna Array System At Base And Mobile Stations In Mobile Environment |
Abstract | ||
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In a time division duplex (TDD) based adaptive antenna array (AAA) and space division multiple access (SDMA) systems, array weights determined from the up-link signals can be applied to the down-link signal transmission because of the channel reciprocity. However, under time-varying fading conditions, for example that created by a rapidly moving mobile station (MS), the channel change between the array weight determination time in the up-link and the down-link signal transmission degrades the accuracy of the array weight. Thus, the spectral efficiency of the system degrades in the down-link. In this paper, we introduce a prototype of an MS with a 2-element antenna array and present the down-link mobility performance results of computer simulations and field experiments in a field trial system of i-Burst, which is a TDD based wireless broadband system employing the AAA/SDMA techniques at the base station. Both results show that adaptive antenna processing at an MS is effective in improving the down-link mobility performance of TDD-AAA/SDMA systems. |
Year | DOI | Venue |
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2007 | 10.1093/ietcom/e90-b.9.2330 | IEICE TRANSACTIONS ON COMMUNICATIONS |
Keywords | Field | DocType |
AAA, SDMA, TDD, mobility, i-Burst | Base station,Transmission (telecommunications),Data transmission,Fading,Computer science,Mobile station,Sensor array,Antenna array,Electronic engineering,Space-division multiple access | Journal |
Volume | Issue | ISSN |
E90B | 9 | 0916-8516 |
Citations | PageRank | References |
4 | 0.50 | 1 |
Authors | ||
6 |
Name | Order | Citations | PageRank |
---|---|---|---|
Kenta Okino | 1 | 8 | 1.34 |
Chiharu Yamazaki | 2 | 4 | 0.50 |
Masanori Kato | 3 | 7 | 4.09 |
Fangwei Tong | 4 | 20 | 2.07 |
Tohru Sunaga | 5 | 4 | 0.84 |
Shigeru Kimura | 6 | 8 | 1.34 |