Shared Hybrid ARQ With Incremental Redundancy (SHARQ IR) in Overloaded MIMO Systems to Support Energy-Efficient Transmissions

Muddesar Iqbal,Muhammad Kashif,Zakir Ullah,Sohail Sarwar,Tasos Dagiuklas,Zia Ul-Qayyum,Muhammad Safyan

doi:10.1109/access.2020.3001146

Muddesar Iqbal, Muhammad Kashif + Show 5 more

Open Access

https://doi.org/10.1109/access.2020.3001146

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Abstract

Multiple Input and Multiple Output is a technology through which data are transmitted over the channel through multiple antennas. However, during its deployment and implementation, some pragmatic issues arise such as interference, multipath fading and noise leading to potential packet losses and consume substantial energy. To address such issues, Hybrid ARQ transmissions provide effective means for error correction, especially in a noisy wireless channel. More often few bits in packets are found to be in error and it is unnecessary to use the entire MIMO channel for retransmission to correct these errors. Hence, this paper proposes a novel approach, i.e., Shared Hybrid ARQ (SHARQ IR) using the piggyback technique in an overloaded MIMO system where the transmitting antennas are more than the receiving antennas. Additionally, the concept of a simple retransmission method is used to transform an overloaded MIMO system into either the critically loaded or under loaded MIMO systems. Simulation results outperform the contemporary approaches through reduced BER and 20% throughput gain. Such improvements have the potential to support energy-efficient transmissions for encouraging green IoT applications.

Highlights

Enabling Ultra-Low Latency is crucial for industry 4.0 Smart Cities Applications within the domain of the Internet of Things (IoT)
The road to 5G runs through 4G wireless infrastructure and improvements to 4G technologies such as massive multiple input and multiple output (MIMO) [4] and beam-forming are promising technologies that will achieve high data rates as required in 5G
RELATED STUDY The foremost algorithms proposed for the detection of multiusers in MIMO systems have been the Diagonal Bell laboratories layered space-time (D-BLAST) and V-BLAST but D-BLAST algorithm is more intricate as compared to V-BLAST

Summary

INTRODUCTION

Enabling Ultra-Low Latency is crucial for industry 4.0 Smart Cities Applications within the domain of the Internet of Things (IoT). The fail data packet is combined with a new data packet and shares the same MIMO diversity channel over the physical layer This gives an added advantage of achieving better BER and throughput compared to the already implemented scheme using HARQ CC (as underlined by the simulation). The proposed approach has an added advantage of improved performance in poor channel conditions, where in addition to redundant bits’ retransmission, new data packets are transmitted as well; that makes it a strong candidate for LTE and 5G communication standards. This proposed approach is an extension of our approach proposed in [23].

RELATED STUDY

PROPOSED TECHNIQUE

SIMULATION RESULTS

CONCLUSION