基于带内自回传小基站系统的干扰抑制方案

doi:10.7523/j.issn.2095-6134.2016.04.017

中国科学院大学学报 ›› 2016, Vol. 33 ›› Issue (4): 548-553.DOI: 10.7523/j.issn.2095-6134.2016.04.017

基于带内自回传小基站系统的干扰抑制方案

张静雷, 邱玲

中国科学技术大学中国科学院无线光电通信重点实验室, 合肥 230027

收稿日期:2015-12-22 修回日期:2016-01-17 发布日期:2016-07-15
通讯作者: 张静雷
基金资助:
863计划项目（2014AA01A707）资助

Interference suppression scheme based on in-band self-backhaul small cell system

ZHANG Jinglei, QIU Ling

Key Laboratory of Wireless-Optical Communications of Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230027, China

Received:2015-12-22 Revised:2016-01-17 Published:2016-07-15

摘要/Abstract

摘要：

基于带内自回传小基站系统，提出一种以用户为中心动态成簇的部分协作干扰抑制方案。根据带内自回传小基站复用接入与回传无线资源的特点，形成以最大化系统下行接入链路吞吐量为目标，联合回传链路资源分配与接入链路预编码设计的优化问题。由于所提问题难以获得最优解，基于凸松弛和分块坐标下降方法，提出一种次优的迭代求解算法。仿真结果表明所提算法能根据回传速率调整协作簇的大小，均衡小基站回传负载，提升系统接入链路的吞吐量。

关键词: 多输入多输出, 协同多点传输, 稀疏化预编码, 带内自回传, 小基站

Abstract:

In this paper, an interference suppression scheme is proposed for in-band self-backhaul small cell system,and it adopts a user-centric clustering and partial joint processing model to eliminate co-channel interference.Considering the same radio frequency band is shared by access link and backhaul link, we formulate a problem which jointly optimizes the backhaul link resource allocation and the access link beamforming to maximize the access link throughput.However,it is difficult to find the optimal solution to this protlem.Based on convex relaxation and block coordinated decent method, a suboptimal iterative algorithm is proposed.Simulation results show that the proposed algorithm can adaptively change coordination cluster size according to backhaul rate, balance backhaul loading of small cell base station,and significantly improve the system access link throughput.

Key words: MIMO, CoMP, sparse beamforming, in-band self-backhaul, small cell

中图分类号:

TN925

张静雷, 邱玲. 基于带内自回传小基站系统的干扰抑制方案[J]. 中国科学院大学学报, 2016, 33(4): 548-553.

ZHANG Jinglei, QIU Ling. Interference suppression scheme based on in-band self-backhaul small cell system[J]. , 2016, 33(4): 548-553.

参考文献

[1] Andrews J G, Buzzi S, Choi W, et al.What will 5G be? [J].Journal on Selected Areas in Commu-nications, IEEE,2014, 32(6): 1 065-1 082.
[2] IMT-2020 (5G) Promotion Group.White paper on 5G wireless technology architecture .2015.
[3] Chen D C, Quek T Q S, Kountouris M.Wireless backhaul in small cell networks: modelling and Analysis //Vehicular Technology Conference (VTC Spring).IEEE.2014:1-6.
[4] Taori R, Sridharan A.Point-to-multipoint in-band mm-wave backhaul for 5G networks [J].Commu-nications Magazine, IEEE, 2015, 53: 195-201.
[5] Shariat M, Pateromichelakis E, Quddus A, et al.Joint TDD backhaul and access optimization in dense small-cell networks [J].Transactions on Vehicular Technology, IEEE, 2015, 64(11): 5 288-5 299.
[6] Papadogiannis A, Gesbert D, Hardouin E.A dynamic clustering approach in wireless networks with multi-cell cooperative processing //Inter-national Conference on Communications (ICC).IEEE, 2008: 4 033-4 037.
[7] Hong M, Sun R Y, Baligh H, et al.Joint base station clustering and beamformer design for partial coordinated transmission in heterogenous networks [J].Journal on Selected Areas in Communications, IEEE, 2013, 31(2): 226-240.
[8] Dai B, Yu W.Sparse beamforming for limited-backhaul network MIMO system via reweighted power minimization // Global Communications Conference(GLOBECOM).IEEE, 2013: 1 962-1 967.
[9] Shi Y, Zhang J.Group sparse beamforming for green Cloud-RAN [J].Transactions on Wireless Communications, IEEE, 2014, 13(5): 2 809-2 823.
[10] Cover T M, Thomas J A.Elements of information theory[M].Hoboken: John Wiley & Sons, 2012.
[11] Shi Q, Razaviyayn M, Luo Z Q, et al.An iteratively weighted MMSE approach to distributed sum-utility maximization for a MIMO interfering broadcast channel [J].Transactions on Signal Processing, IEEE, 2011, 59(9): 4 331-4 340.
[12] Yuan M, Lin Y.Model selection and estimation in regression with grouped variables [J].Journal of the Royal Statistical Society: Series B (Statistical Methodology), 2006, 68(1): 49-67.
[13] Kim T M, Sun F, Paulraj A J.Low-complexity MMSE precoding for coordinated multipoint with per-antenna power constraint [J].Signal Processing Letters, IEEE, 2013, 20(4): 395-398.

基于带内自回传小基站系统的干扰抑制方案

Interference suppression scheme based on in-band self-backhaul small cell system

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

编辑推荐

Metrics

本文评价

访问统计

联系我们

[1]	李勇, 袁晓军. MIMO多向中继信道在完整数据交换模型下的自由度[J]. 中国科学院大学学报, 2020, 37(5): 663-672.
[2]	王川, 邱玲. MIMO下行多用户中继系统的线性收发处理设计[J]. 中国科学院大学学报, 2015, 32(3): 378-383.
[3]	谢磊, 邱玲. 下行多用户MIMO中基于SLNR的迭代用户功率分配[J]. 中国科学院大学学报, 2013, 30(4): 572-576.