Ecole d'ingénieur et centre de recherche en Sciences du numérique

Single-user MIMO ML successive interference canceling receiver with HARQ-IR protocol

Lukashova, Elena; Kaltenberger, Florian; Knopp, Raymond

WSA 2017, 21st International ITG Workshop on Smart Antennas, 15-17 March 2017, Berlin, Germany

Incremental Redundancy Hybrid Automatic Repeat Request (HARQ-IR) retransmission protocol was developed to reduce the transmission errors over fading channels through multiple retransmissions. In this paper, we implement HARQ-IR for Single User MIMO systems with Successive Interference Canceling (SIC) receiver. We perform the throughput and reliability analysis for the MIMO system with Closed Loop Spatial Multiplexing (TM4) with two codewords (CW) and compare the results for SIC and Parallel Interference Aware (PIA) receiver. Our SIC receiver benefits from the log-likelihood ratios combining for the second transport block, accessed through the multi-round SIC procedure a posteriori to all the previous rounds once the first CW has been decoded, while PIA receiver treats both CWs in the same manner. The SIC receiver achieves higher throughput in frequency selective environment, receiving most of the gain in the first two retransmission rounds. For both receivers, the first transport block enjoys huge performance improvement in the low SNR regime thanks to HARQ at the price of spectral efficiency degradation due to reuse of the space-frequency resources. We also investigate the optimal retransmission scheme for TM4 in the scenarios with one successfully decoded CW, while another one is in error.

Document Bibtex

Titre:Single-user MIMO ML successive interference canceling receiver with HARQ-IR protocol
Type:Conférence
Langue:English
Ville:Berlin
Pays:ALLEMAGNE
Date:
Département:Systèmes de Communication
Eurecom ref:5116
Copyright: Copyright ITG. Personal use of this material is permitted. The definitive version of this paper was published in WSA 2017, 21st International ITG Workshop on Smart Antennas, 15-17 March 2017, Berlin, Germany and is available at :
Bibtex: @inproceedings{EURECOM+5116, year = {2017}, title = {{S}ingle-user {MIMO} {ML} successive interference canceling receiver with {HARQ}-{IR} protocol}, author = {{L}ukashova, {E}lena and {K}altenberger, {F}lorian and {K}nopp, {R}aymond}, booktitle = {{WSA} 2017, 21st {I}nternational {ITG} {W}orkshop on {S}mart {A}ntennas, 15-17 {M}arch 2017, {B}erlin, {G}ermany}, address = {{B}erlin, {ALLEMAGNE}}, month = {03}, url = {http://www.eurecom.fr/publication/5116} }
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