Diversity Integration in Hybrid-ARQ With Chase Combining Under Partial CSI

作     者：Wang, Kun Ding, Zhi 

作者机构：Univ Calif Davis Dept Elect & Comp Engn Davis CA 95616 USA 

出 版 物：《IEEE TRANSACTIONS ON COMMUNICATIONS》 

年 卷 期：2016年第64卷第6期

页      面：2647-2659页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：National Science Foundation [CNS-1443870, ECCS-1307820, CIF-1321143] Direct For Computer & Info Scie & Enginr Funding Source: National Science Foundation Division Of Computer and Network Systems Funding Source: National Science Foundation Division of Computing and Communication Foundations Direct For Computer & Info Scie & Enginr Funding Source: National Science Foundation Div Of Electrical, Commun & Cyber Sys Directorate For Engineering Funding Source: National Science Foundation 

主　　题：Second-order cone programming polar code joint detection and decoding HARQ 

摘      要：We consider a receiver design for a Hybrid Automatic-Repeat-reQuest (HARQ) system protected by polar codes against transmission errors. This integrated detection-decoding receiver targets a packet link for which channel state information during HARQ retransmission is unavailable at the receiver. Under such channel uncertainties, we propose a second-order cone programming (SOCP) approach for diversity combining without resorting to decision-directed channel estimation prone to error propagation. We formulate an integrated SOCP receiver by jointly exploiting the constraints from diversity channel models, subspace separation, and forward error correction codes. Unlike traditional turbo receiver algorithms that require iterative exchange of soft information between detector and decoder, our proposed SOCP receiver solves as a single-integrated convex optimization problem. This formulation is also versatile and extendable to a plurality of practical scenarios. We further investigate the means for enhancing the receiver performance and the HARQ throughput. Numerical results demonstrate the substantial performance benefits of the proposed joint SOCP receiver.