Journal ArticleDOI
Optimal modulation and coding scheme selection in cellular networks with hybrid-ARQ error control
TLDR
Through link-level and system-level simulations, it is shown that the proposed MCS selection criterion yields higher average cell throughput than the conventional M CS selection schemes for slowly varying channels.Abstract:
We propose an optimal modulation and coding scheme (MCS) selection criterion for maximizing user throughput in cellular networks. The proposed criterion adopts both the Chase combining and incremental redundancy based hybrid automatic repeat request (HARQ) mechanisms and it selects an MCS level that maximizes the expected throughput which is estimated by considering both the number of transmissions and successful decoding probability in HARQ operation. We also prove that the conventional MCS selection rule is not optimized with mathematical analysis. Through link-level and system-level simulations, we show that the proposed MCS selection criterion yields higher average cell throughput than the conventional MCS selection schemes for slowly varying channels.read more
Citations
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Proceedings ArticleDOI
MCS Selection for Throughput Improvement in Downlink LTE Systems
TL;DR: From both analysis and simulation results, it is shown that the system throughput of all the proposed schemes are better than that of the scheme in [7], and the MCS selection scheme using harmonic mean based effective packet-level SINR almost reaches the optimal performance and significantly outperforms the other proposed schemes.
Journal ArticleDOI
Deep Reinforcement Learning-Based Modulation and Coding Scheme Selection in Cognitive Heterogeneous Networks
TL;DR: In this paper, the authors exploit deep reinforcement learning (DRL) and propose an intelligent MCS selection algorithm for the primary transmission, which can achieve a higher primary transmission rate than those of the benchmark algorithms.
Journal ArticleDOI
Optimal Rate Adaptation for Hybrid ARQ in Time-Correlated Rayleigh Fading Channels
TL;DR: This paper analyzes the outage probability and delay-limited throughput of HARQ with rate adaptation in a time-correlated channel model, and proposes a rate adaptation scheme to maximize the delay- limited throughput and evaluates the performance of the proposed scheme under a delay constraint.
Journal ArticleDOI
An overview of spectrum sharing techniques in cognitive radio communication system
Shweta Pandit,Ghanshyam Singh +1 more
TL;DR: The potential advantages, limiting factors, and characteristic features of the existing cognitive radio spectrum sharing domains are thoroughly discussed and an overview of the spectrum sharing is provided as it ensures the channel access without the interference/collision to the licensed users in the spectrum.
Proceedings ArticleDOI
Optimal Rate Sampling in 802.11 Systems
TL;DR: This paper presents ORS (Optimal Rate Sampling), a family of (mode, rate) pair adaptation algorithms that provably learn as fast as it is possible the best pair for transmission and illustrates the efficiency of ORS algorithms (compared to the state-of-the-art algorithms) using simulations and traces extracted from 802.11 test-beds.
References
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Journal ArticleDOI
Code Combining--A Maximum-Likelihood Decoding Approach for Combining an Arbitrary Number of Noisy Packets
TL;DR: The receiver adapts to the actual jammer-to-signal(J/S)ratio which is critical when the level of interference is not known a priori, and optimizes the code rate and minimizes the delay required to decode a given packet.
Journal ArticleDOI
Adaptive coded modulation for fading channels
Andrea Goldsmith,S.-G. Chua +1 more
TL;DR: Trellis and lattice codes designed for additive white Gaussian noise channels can be superimposed on adaptive modulation for fading channels, with the same approximate coding gains, to obtain trellis-coded adaptive MQAM.
Journal ArticleDOI
The throughput of hybrid-ARQ protocols for the Gaussian collision channel
Giuseppe Caire,Daniela Tuninetti +1 more
TL;DR: The throughput of automatic retransmission request (ARQ) protocols is compared to that of code division multiple access (CDMA) with conventional decoding and Interestingly, the ARQ systems are not interference-limited even if no multiuser detection or joint decoding is used, as opposed to conventional CDMA.
Journal ArticleDOI
Adaptation techniques in wireless packet data services
TL;DR: Data rate adaptation procedures for CDMA (IS-95), widebandCDMA (cdma2000 and UMTS WCDMA), TDMA (is-136), and GSM (GPRS and EDGE) are described.
Journal ArticleDOI
An adaptive-feedback coding scheme using incremental redundancy (Corresp.)
TL;DR: A feedback decision scheme is proposed in which a punctured codeword is initially transmitted and if an uncorrectable error is detected, the receiver signals the transmitter to send another increment of redundancy.
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