Multiple retransmission strategy‐based HARQ for MIMO systems with acknowledgment bundling. Issue 8 (1st April 2014)

• Record Type: Journal Article
• Authors: Park, Sangjoon
• Is Part Of: Electronics letters. Volume 50:Issue 8(2014)
• Page Start: 637
• Page End: 639
• Publication Date: 2014-04-01
• Subjects: MIMO communication -- automatic repeat request -- packet radio networks -- interference suppression; multiple retransmission strategy‐based HARQ -- MIMO system -- acknowledgement bundling -- hybrid automatic repeat request -- multiple‐input multiple‐output system -- packet retransmission -- chase combining -- incremental redundancy -- MRS‐HARQ -- IR packets -- signal‐to‐noise ratio -- SNR gains -- CC packets -- interference elimination -- ACK bundling; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.3625
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A new hybrid automatic repeat request (HARQ) scheme is proposed for multiple‐input multiple‐output (MIMO) systems when the acknowledgment (ACK) bundling is applied for packet retransmissions. In the proposed HARQ scheme, both Chase combining (CC) and incremental redundancy (IR) are utilised for a retransmission request, and the proposed HARQ scheme is called a multiple retransmission strategy‐based HARQ (MRS‐HARQ). During the reception process of the MRS‐HARQ, IR packets obtain signal‐to‐noise ratio gains using the extended detection with CC packets and the improved IR packets are utilised to eliminate the interference from the CC packets. This sequential reliability improvement allows the MRS‐HARQ to decrease the occurrence of the deficient transmissions, and the proposed MRS‐HARQ can achieve an improved error performance and throughput over the conventional CC‐based and IR‐based HARQ schemes with the ACK bundling.