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On Performance Improvement of Wireless Push Systems via Smart Antennas

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4 Author(s)
Nicopolitidis, P. ; Dept. of Inf., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece ; Kakali, V. ; Papadimitriou, G. ; Pomportsis, A.

In environments with locality of client demands, the use of multiple directional antennas at the Broadcast Server has been shown to increase performance. In many cases however, such broadcasting systems fail to exploit the full potential of the multiple antennas as they do not take into account the geographical distribution of clients within the coverage area of the system. This letter proposes an adaptive smart antenna-based wireless push system where the beamwidth of each smart antenna is altered based on the current placement of clients within the system area. Coupled with a modification of the broadcast schedule, the proposed approach significantly increases the performance observed by the system clients.

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Communications, IEEE Transactions on  (Volume:60 ,  Issue: 2 )