Compute-and-Forward for Random-Access: The Case of Multiple Access Points

Ashrafi, Shwan; Feng, Chen; Roy, Sumit

doi:10.1109/tcomm.2018.2821128

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…Joint typicality decoders are adopted to the CP&F method in [64]- [67]. The CP&F is also considered for random access channels in [92], [93], [114]. The impact of the input distribution to the computation rate of the CP&F is considered in [57] for the Gaussian W-MAC.…”

Section: Sum Ratesmentioning

confidence: 99%

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

2022

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In conventional communication systems, any interference between two communicating points is regarded as unwanted noise since it distorts the received signals. On the other hand, allowing simultaneous transmission and intentionally accepting the superposition of signals and even benefiting from it have been considered for a range of wireless applications. As prominent examples, NOMA, joint sourcechannel coding, and the computation codes are designed to exploit this scenario. They also inspired many other fundamental works from network coding to consensus algorithms. Especially, federated learning is an emerging technology that can be applied to distributed machine learning networks by allowing simultaneous transmission. Although various simultaneous transmission applications exist independently in the literature, their main contributions are all based on the same principle; the superposition property. In this survey, we aim to emphasize the connections between these studies and provide a guide for the readers on the wireless communication techniques that benefit from the superposition of signals. We classify the existing literature depending on their purpose and application area and present their contributions. The survey shows that simultaneous transmission can bring scalability, security, low-latency, low-complexity and energy efficiency for certain distributed wireless scenarios which are inevitable with the emerging wireless technologies.

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Section: Sum Ratesmentioning

confidence: 99%

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

2022

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“…Joint typicality decoders are adopted to the CP&F method in [100]- [103]. The CP&F is also considered for random access channels in [104]- [106]. The impact of the input distribution to the computation rate of the CP&F is considered in [107] for the Gaussian W-MAC.…”

Section: Sum Ratesmentioning

confidence: 99%

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

Altun,

Kurt,

Ozdemir

2021

Preprint

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In conventional communication systems, any interference between two communicating points is regarded as unwanted noise since it distorts the received signals. On the other hand, allowing simultaneous transmission and intentionally accepting the interference of signals and even benefiting from it have been considered for a range of wireless applications. As prominent examples, non-orthogonal multiple access (NOMA), joint source-channel coding, and the computation codes are designed to exploit this scenario. They also inspired many other fundamental works from network coding to consensus algorithms. Especially, federated learning is an emerging technology that can be applied to distributed machine learning networks by allowing simultaneous transmission. Although various simultaneous transmission applications exist independently in the literature, their main contributions are all based on the same principle; the superposition property. In this survey, we aim to emphasize the connections between these studies and provide a guide for the readers on the wireless communication techniques that benefit from the superposition of signals. We classify the existing literature depending on their purpose and application area and present their contributions. The survey shows that simultaneous transmission can bring scalability, security, low-latency, lowcomplexity and energy efficiency for certain distributed wireless scenarios which are inevitable with the emerging Internet of things (IoT) applications.

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“…According to the re-transmission mode of the relay, various cooperative transmission protocols can be used, such as the amplify-and-forward (AF) and decode-and-forward (DF) protocols. Recently, the computeand-forward (CF) protocol has been developed as a new relaying technique that can offer significantly higher rates compared with the other relaying strategies [6]- [13]. The underlying principle of CF is that relays decode the integer linear equations of transmitted messages from the source nodes.…”

Section: Introductionmentioning

confidence: 99%

Joint Integer-Forcing Precoder Design for MIMO Multiuser Relay System

et al. 2019

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In this paper, we study a relay-aided multiuser amplify-and-forward relaying system where a multi-antenna base station (BS) transmits downlink to multiple single-antenna mobile stations (MSs) via a multi-antenna relay station (RS). We propose a novel precoder design scheme by using the joint integer-forcing method to achieve high rate with the algebraic structure of lattice codes. Inspired by the concept of decoding the linear equations in compute-and-forward relay systems, the linear precoding matrix is generalized as an integer matrix that is approximate to the channel matrix, thereby mitigating the multiuser interference (MUI) at the MSs. The power allocation optimization problem at the BS is taken into account to improve the performance of the scheme. The simulation results show the outstanding performance of the proposed scheme.INDEX TERMS Multiuser, integer-forcing, multiple-input multiple-output (MIMO), compute-and-forward, linear precoding.

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Compute-and-Forward for Random-Access: The Case of Multiple Access Points

Cited by 4 publications

References 29 publications

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

The Magic of Superposition: A Survey on Simultaneous Transmission Based Wireless Systems

Joint Integer-Forcing Precoder Design for MIMO Multiuser Relay System

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