HARQ with Chase-combining (HARQ-CC) for Uplink Transmission in Large-Antenna-Array Multicell Systems

被引：1

作者：

Kim, Seong Hwan ^{[1
]}

Chaitanya, Tumula V. K. ^{[2
]}

Le-Ngoc, Tho ^{[1
]}

机构：

[1] McGill Univ, Dept Elect & Comp Engn, 3480 Univ St, Montreal, PQ, Canada

[2] Huawei Sweden Technol AB, S-22465 Lund, Sweden

来源：

2016 IEEE 83RD VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2016年

关键词：

HARQ; large-scale antenna arrays; MU-SIMO; multicell; HYBRID-ARQ; PERFORMANCE; THROUGHPUT; MIMO;

D O I：

10.1109/VTCSpring.2016.7504266

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider Hybrid Automatic Repeat & reQuest with Chase-combining (HARQ-CC) for uplink spectral efficiency enhancement in a multicell system with base-stations (BSs) using large antenna arrays. Each BS uses a zero-forcing receiver and knows only the channel gains of users in its own cell. We first derive the outage probability and long-term average transmission rate (LATR) of the proposed HARQ-CC while limiting the number of retransmissions. We then formulate the optimal rate-selection problem for the proposed scheme and provide a method to find a solution. Since the optimal-rate selection method for the HARQ-CC scheme is computationally intensive, we develop a sub-optimal rate-selection technique that has a LATR performance close to that of the optimal method. Illustrative results show that the HARQ-CC requires less number of antennas than the non-HARQ scheme to achieve the same LATR performance.

引用

页数：5