Adaptive Channel Allocation in OFDM/SDMA Wireless LANs with Limited Transceiver Resources
نویسندگان
چکیده
Smart antennas increase capacity of wireless systems by allowing channel reuse by several users in the same cell through space division multiple access (SDMA). Orthogonal Frequency Division Multiplexing (OFDM) creates additional challenges in beam-forming when the beams that can be formed are limited due to transceiver unit limitations. We investigate the impact of smart antennas on channel allocation and propose meaningful heuristics to form beams and assign subcarriers and transceivers to users. Numerical results quantify performance benefits and provide useful design guidelines.
منابع مشابه
Adaptive channel assignment in SDMA-based wireless LANs with transceiver resource limitations
Beamforming with adaptive antenna arrays is the most promising means for increasing data rates of wireless systems, since it enables channel reuse by several users in a cell through space division multiple access (SDMA). In SDMA, multiple beams are formed towards different users, each beam by a dedicated transceiver. However, the use of adaptive antenna arrays at the physical layer mandates sig...
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