Joint Integer-Forcing Precoder Design for MIMO Multiuser Relay System

Jiang, Hua; Zhao, Jian; Shen, Lizhen; Cheng, Hao; Liu, Guoqing

doi:10.1109/access.2019.2924020

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…The results indicate that the successive integer-forcing receiver can achieve the channel's sum capacity and outperform the traditional linear receivers with SIC in certain scenarios. In [30], the authors integrate the integerforcing technique into multi-receiver amplify-and-forward relaying systems. The proposed approach demonstrates the effectiveness of integer-forcing techniques when the power allocations are optimized.…”

Section: Multiple Antennamentioning

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: Multiple Antennamentioning

confidence: 99%

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

2022

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“…Hence, the right unitary matrix of the concatenated matrix consisting of the desired and interfering links are employed to convey common streams. On the other hand, since private streams are only recovered by the dedicated receiver while interfering to the other receiver, ZF beamforming is used to null out interference to the unintended receiver in addition to the SVD beamforming in (35). More specifically, a hybrid scheme, which is a simple linear combination of the ZF and SVD beamforming schemes, is proposed in (35) as a compromise between the two approaches.…”

Section: Design Of Transmit Beamformingmentioning

confidence: 99%

“…4) Full CSIT case: Finally, we examine the full CSIT case. Recall that in this case, the transmit beamforming matrices for common and private streams are set to (34) and (35), respectively. In simulation, we set M R = 4 and α i,j = 1 for all i, j ∈ {1, 2}, and consider the cases where M T ∈ {6, 8} and K ∈ {0, 20}.…”

Section: ) Benchmark Schemesmentioning

confidence: 99%

Integer Forcing Interference Management for the MIMO Interference Channel

Chae¹,

Jeon²

2022

Preprint

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A new interference management scheme based on integer forcing (IF) receivers is studied for the two-user multiple-input and multiple-output (MIMO) interference channel. The proposed scheme employs a message splitting method that divides each data stream into common and private sub-streams, in which the private stream is recovered by the dedicated receiver only while the common stream is required to be recovered by both receivers. Specifically, to enable IF sum decoding at the receiver side, all streams are encoded using the same lattice code. Additionally, the number of common and private streams of each user is carefully determined by considering the number of antennas at transmitters and receivers, the channel matrices, and the effective signal-to-noise ratio (SNR) at each receiver to maximize the achievable rate. Furthermore, we consider various assumptions of channel state information at the transmitter side (CSIT) and propose low-complexity linear transmit beamforming suitable for each CSIT assumption. The achievable sum rate and rate region are analytically derived and extensively evaluated by simulation for various environments, demonstrating that the proposed interference management scheme strictly outperforms the previous benchmark schemes in a wide range of channel parameters due to the gain from IF sum decoding.

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“…The practical approach for the IF receiver and the application in the MIMO multiuser system is discussed in [7][8][9]. Beyond that, MIMO relay multiuser systems equipped with IF precoding technique can achieve an outstanding performance [10].…”

Section: Introductionmentioning

confidence: 99%

Vandermonde-Based Unitary Precoding Method for Integer-Forcing Design

Jiang

Kong

2022

Wireless Communications and Mobile Computing

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An integer-forcing linear receiver has significantly better performance than conditional receivers for slow-fading channels because it directly recovers an integer linear combination of signals instead of decoding all signals. The performance in terms of achievable rate, outage probability, and error rate can be improved with a unitary matrix precoder imposed at each channel realization. In this paper, a new special unitary matrix precoding approach is proposed to reduce the computational complexity. Different from the parameterization technique with many parameters, the new method constructs a unitary Vandermonde matrix with only a single parameter. The optimal Vandermonde matrix is determined on the basis of the shortest vector of a lattice generated by the precoding matrix in which the single parameter is searched. Therefore, its complexity is reduced to a polynomial time, whereas the traditional unitary precoder has exponential complexity. Simulation results show that the proposed scheme can achieve the performance similar to the benchmark schemes but with much lower complexity. The scheme offers a good trade-off between performance and complexity.

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Joint Integer-Forcing Precoder Design for MIMO Multiuser Relay System

Cited by 6 publications

References 33 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

Integer Forcing Interference Management for the MIMO Interference Channel

Vandermonde-Based Unitary Precoding Method for Integer-Forcing Design

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