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Method and apparatus for pilot-reuse in reciprocity-based training schemes for downlink multi-user MIMO
Method and apparatus for pilot-reuse in reciprocity-based training schemes for downlink multi-user MIMO
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机译:在下行链路多用户MIMO的基于互惠的训练方案中进行导频重用的方法和装置
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摘要
A method and apparatus is disclosed herein for employing pilot-reuse for training in the downlink of a wireless communication network. In one embodiment, the method comprises coordinating assignment of pilot codes across base stations in the topology and coordinating assignment of codes across base station-user terminal pairs, including assigning, from a set of pilot codes, a subset of codes to each cell in the topology, and assigning codes in each subset of codes to user terminals in said each cell based on cell dependent criteria; receiving waveforms from user terminals transmitting their assigned pilots; obtaining channel estimate information for channels between base station antennas and user terminals to which the base station is transmitting, the channel estimates based on the received waveforms; and transmitting to user terminals based on the channel estimate information.
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