Achieving large multiplexing gain in distributed antenna systems via cooperation with pCell technology
2015 49th Asilomar Conference on Signals, Systems and Computers(2015)
摘要
In this paper we present pCellTM technology, the first commercial-grade wireless system that employs cooperation between distributed transceiver stations to create concurrent data links to multiple users in the same spectrum. First we analyze the per-user signal-to-interference-plus-noise ratio (SINR) employing a geometrical spatial channel model to define volumes in space of coherent signal around user antennas (or personal cells, i.e., pCells). Then we describe the system architecture consisting of a general-purpose-processor (GPP) based software-defined radio (SDR) wireless platform implementing a real-time LTE protocol stack to communicate with off-the-shelf LTE devices. Finally we present experimental results demonstrating up to 16 concurrent spatial channels for an aggregate average spectral efficiency of 59.3 bps/Hz in the downlink and 27.5 bps/Hz in the uplink, providing data rates of 200 Mbps downlink and 25 Mbps uplink in 5 MHz of TDD spectrum.
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关键词
multiplexing gain,distributed antenna systems,pCell technology,wireless system,distributed transceiver stations,signal-to-interference-plus-noise ratio,SINR,geometrical spatial channel model,user antennas,general-purpose-processor,software-defined radio,SDR wireless platform,real-time LTE protocol stack,LTE devices,concurrent spatial channels,spectral efficiency,data rates,TDD spectrum,smartphones,frequency 5 MHz,bit rate 25 Mbit/s
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