Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems
Non-Orthogonal Multiple Access in Downlink Coordinated Two-Point Systems
复制标题
DOI：
10.1109/lcomm.2013.123113.132450
复制
发表时间：
2014-02-01
期刊：
影响因子：
--
通讯作者：
Choi, Jinho
中科院分区：
文献类型：
--
作者：
Choi, Jinho
为了提高频谱效率，在协调系统中采用非正交多址（NOMA）叠加编码，同时向基站附近用户和蜂窝边缘用户发送下行信号。为了在NOMA信道中支持蜂窝边缘用户，两个协调的BSs使用Alamouti码。为了观察性能，我们推导了到近端用户和蜂窝边缘用户的传输速率表达式。实验结果表明，所提出的协调叠加编码（CSC）方案能够在不降低基站附近用户传输速率的前提下，为蜂窝边缘用户提供合理的传输速率。
In order to improve the spectral efficiency, non-orthogonal multiple access (NOMA) with superposition coding is employed in a coordinated system where downlink signals to users near to base stations (BSs) and cell-edge users are transmitted simultaneously. To support a cell-edge user in a NOMA channel, two coordinated BSs use Alamouti code. In order to see the performance, we derive expressions for the transmission rates to near and cell-edge users. It is shown that the proposed coordinated superposition coding (CSC) scheme can provide a reasonable transmission rate to a cell-edge user without degrading the rates to users near to BSs.