利用pCell技术实现分布式天线系统的大复用增益
Achieving Large Multiplexing Gain in Distributed Antenna Systems via Cooperation with pCell Technology
摘要：
在本文中，我们提出了pCellTM技术，第一个商业级的无线系统，采用分布式收发站之间的合作，以创建并发的数据链路，在同一频谱的多个用户。首先，我们采用几何空间信道模型来分析每个用户的信号与干扰加噪声比（SINR），以定义用户天线（或个人小区，即，pCells）。然后，我们描述的系统架构，包括一个通用处理器（GPP）的软件定义无线电（SDR）的无线平台实现实时LTE协议栈与现成的LTE设备进行通信。最后，我们提出的实验结果表明，高达16个并发的空间信道的聚合平均频谱效率为59.3 bps/Hz的下行链路和27.5 bps/Hz的上行链路，提供数据率的200 Mbps的下行链路和25 Mbps的上行链路在5 MHz的TDD频谱。
英文摘要：
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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