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We investigate the performance of a multiple reconfigurable intelligence surface (RIS)-aided millimeter wave (mmWave) beamspace multiple-input multiple-output (MIMO) system with multiple users (UEs). We focus on a challenging scenario in…

We study a new IA strategy which is referred to as "Partial Interference Cancelation-based Interference Alignment" (PIC-IA). Unlike the conventional IA strategy, PIC-IA does not strive to eliminate interference from all users. Instead, it…

信息论 · 计算机科学 2013-04-09 Lingxiang Li , Zhi Chen , Jun Fang

Interference alignment (IA) is a linear precoding strategy that can achieve optimal capacity scaling at high SNR in interference networks. Most of the existing IA designs require full channel state information (CSI) at the transmitters,…

信息论 · 计算机科学 2015-06-16 Xiongbin Rao , Liangzhong Ruan , Vincent K. N. Lau

Interference alignment (IA) is a multiplexing gain optimal transmission strategy for the interference channel. While the achieved sum rate with IA is much higher than previously thought possible, the improvement often comes at the cost of…

信息论 · 计算机科学 2015-03-17 Omar El Ayach , Robert W. Heath

Interference alignment aims to achieve maximum degrees of freedom in an interference system. For achieving Interference alignment in interfering broadcast systems a closed-form solution is proposed in [1] which is an extension of the…

信息论 · 计算机科学 2014-06-20 Gaurav Gupta , Ajit K Chaturvedi

A simple channel state information (CSI) feedback scheme is proposed for interference alignment (IA) over the K-user constant Multiple-Input-Multiple-Output Interference Channel (MIMO IC). The proposed technique relies on the identification…

信息论 · 计算机科学 2015-02-17 Mohsen Rezaee , Maxime Guillaud

In this paper, we study an interference alignment (IA) scheme with finite time extension and beamformer selection method with low computational complexity for X channel. An IA scheme with a chain structure by the Latin square is proposed…

信息论 · 计算机科学 2018-10-15 Young-Sik Moon , Jong-Yoon Yoon , Jong-Seon No , Sang-Hyo Kim

In recent years, the demand for high speed wireless networking has increased considerably due to the enormous number of devices connected to the Internet. In this context, optical wireless communication (OWC) has received tremendous…

信息论 · 计算机科学 2021-09-28 Ahmad Adnan Qidan , Taisir El-Gorashi , Jaafar M. H. Elmirghani

While interference alignment schemes have been employed to realize the full multiplexing gain of $K$-user interference channels, the analyses performed so far have predominantly focused on the case when global channel knowledge is available…

信息论 · 计算机科学 2009-12-01 Rajesh T Krishnamachari , Mahesh K Varanasi

To accommodate the explosive growth of the Internet-of-Things (IoT), incorporating interference alignment (IA) into existing multiple access (MA) schemes is under investigation. However, when it is applied in MIMO networks to improve the…

信息论 · 计算机科学 2021-09-01 Jingfu Li , Zehui Xiong , Dusit Niyato , Weifeng Su , Wenjiang Feng , Weiheng Jiang

Nowadays, providing higher data rate is a momentous goal for wireless communications systems. Interference is one of the important obstacles to reach this purpose. Interference alignment is a management technique that align interference…

信息论 · 计算机科学 2017-04-12 Siavash Mollaebrahim , Pouya Ghari , Mohammad Sadegh Fazel , Muhammad Ali Imran

Integrated sensing and communication (ISAC) has been envisioned to play a more important role in future wireless networks. However, the design of ISAC networks is challenging, especially when there are multiple communication and sensing…

信息论 · 计算机科学 2025-06-09 Haoyun Li , Ming Xiao , Kezhi Wang , Robert Schober , Dong In Kim , Yong Liang Guan

One of the main challenges facing Internet of Things (IoT) networks is managing interference caused by the large number of devices communicating simultaneously, particularly in multi-cluster networks where multiple devices simultaneously…

信号处理 · 电气工程与系统科学 2025-10-07 Lucas Sempéré , Yue Bi , Yue Wu , Pengwenlong Gu , Selma Boumerdassi

For a K-user interference channel, the degree of freedom (DoF) which can be achieved through interference alignment (IA) is constrained to signal space dimension governed by the number of Tx/Rx antennas. To overcome this problem, IA can be…

信号处理 · 电气工程与系统科学 2020-02-06 Xin Qu , Chung G. Kang

Interference alignment in the K-user MIMO interference channel with constant channel coefficients is considered. A novel constructive method for finding the interference alignment solution is proposed for the case where the number of…

信息论 · 计算机科学 2016-11-18 Roland Tresch , Maxime Guillaud , Erwin Riegler

In this paper we present an experimental study on the performance of spatial Interference Alignment (IA) in indoor wireless local area network scenarios that use Orthogonal Frequency Division Multiplexing (OFDM) according to the…

Heterogeneous networks have a key role in the design of future mobile communication networks, since the employment of small cells around a macrocell enhances the network's efficiency and decreases complexity and power demand. Moreover,…

信息论 · 计算机科学 2015-07-02 Vaia Kalokidou , Oliver Johnson , Robert Piechocki

Integrated sensing and communication (ISAC) unifies sensing and communication, and improves the efficiency of the spectrum, energy, and hardware. In this work, we investigate the ISAC beamforming design to maximize the mutual information…

信号处理 · 电气工程与系统科学 2023-01-12 Jin Li , Gui Zhou , Tantao Gong , Nan Liu

Opportunistic interference alignment (OIA) exploits channel randomness and multiuser diversity by user selection. For OIA the transmitter needs channel state information (CSI), which is usually measured on the receiver side and sent to the…

信息论 · 计算机科学 2015-05-06 Zhinan Xu , Mingming Gan , Thomas Zemen

The transmitter optimization (i.e., steering vectors and power allocation) for a MISO Broadcast Channel (MISO-BC) subject to general linear constraints is considered. Such constraints include, as special cases, the sum power, the…

信息论 · 计算机科学 2015-05-14 Hoon Huh , Haralabos C. Papadopoulos , Giuseppe Caire