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Keywords: Wireless mesh networks IEEE 802.16 Centralized scheduling Slot allocation Combined uplink and downlink slot allocation a b s t r a c t In IEEE 802.16 based wireless mesh networks (WMNs), TDMA (Time Division Multiple Access) is employed as the channel access method and only TDD (Time Division Duplex) is supported and there are no clearly separate(More)
In this paper, a combined switched beam-forming and adaptive beam-forming algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems with antenna arrays in multi-path fading channels. Firstly, multiple beams are generated by using a set of known weight vectors to cover the direction of arrival (DOA) range from 0 to 360 degrees.(More)
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