东南大学学报（英文版）2017，Vol.33Issue(3)：253-259,7.DOI:10.3969/j.issn.1003-7985.2017.03.001
有限容量回程链路的下行链路多小区处理的叠加编码策略
A superposition scheme for downlink multicell processing with finite backhaul capacity
摘要
Abstract
In the scenario of downlink multicell processing with finite backhaul capacity in the case of two base stations and two mobile users, by regarding the channel as a multiple access diamond channel with two destinations, an achievability scheme that sends correlated codewords through the multiple access channel with common data is proposed. By considering the superposition structure, fully correlated codewords can be supported by the proposed scheme, which can benefit the system throughput in the case of a relatively-large-capacity backhaul. First, an achievable region for the achievable theory is given and it is proved from the perspective of information theory. Then, in the Gaussian scenario, a simulation combining dirty-paper coding and power allocating is provided for the achievable region. Simulation results demonstrate that when the backhaul capacity is relatively large, the proposed scheme outperforms the existing achievability scheme without the superposition structure.关键词
多小区处理/有限回程链路容量/叠加编码/脏纸编码/功率分配Key words
multicell processing/finite backhaul capacity/superposition/dirty-paper coding/power allocating分类
信息技术与安全科学引用本文复制引用
易骁,吴明战,刘楠..有限容量回程链路的下行链路多小区处理的叠加编码策略[J].东南大学学报（英文版）,2017,33(3):253-259,7.基金项目
The National Natural Science Foundation of China (No. 61571123, 61521061), the Research Fund of National Mobile Communications Research Laboratory of Southeast University (No. 2017A03), Qing Lan Project. （No. 61571123, 61521061）
