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Interference shapes the interplay between capacity and coverage in cellular networks. However, interference is non-deterministic and depends on various system and channel parameters including user scheduling, frequency reuse, and fading…

信息论 · 计算机科学 2015-04-16 Naeem Akl , Jihad Fahs , Zaher Dawy

In many wireless networks, link strengths are affected by many topological factors such as different distances, shadowing and inter-cell interference, thus resulting in some links being generally stronger than other links. From an…

信息论 · 计算机科学 2014-04-22 Jinyuan Chen , Petros Elia , Syed Ali Jafar

Interference alignment (IA) is a joint-transmission technique that achieves the capacity of the interference channel for high signal-to-noise ratios (SNRs). Most prior work on IA is based on the impractical assumption that perfect and…

信息论 · 计算机科学 2015-05-28 Sungyoon Cho , Kaibin Huang , Dongku Kim , Vincent K. N. Lau , Hyukjin Chae , Hanbyul Seo , Byounghoon Kim

Recent information theoretic results suggest that precoding on the multi-user downlink MIMO channel with delayed channel state information at the transmitter (CSIT) could lead to data rates much beyond the ones obtained without any CSIT,…

信息论 · 计算机科学 2012-07-10 Xinping Yi , David Gesbert

Accurate downlink channel state information (CSI) is vital to achieving high spectrum efficiency in massive MIMO systems. Existing works on the deep learning (DL) model for CSI feedback have shown efficient compression and recovery in…

信息论 · 计算机科学 2022-05-10 Zhenyu Liu , Zhi Ding

In this paper, we propose a new retrospective interference alignment for two-cell multiple-input multiple-output (MIMO) interfering multiple access channels (IMAC) with the delayed channel state information at the transmitters (CSIT). It is…

信息论 · 计算机科学 2016-11-17 Wonjae Shin , Yonghee Han , Jungwoo Lee , Namyoon Lee , Robert W. Heath

In this study we explore the performance gain that can be achieved at the network level by employing successive interference cancelation (SIC) instead of treating interference as noise for random access wireless mesh networks with…

网络与互联网体系结构 · 计算机科学 2015-02-12 Nikolaos Pappas , Manolis Ploumidis , Apostolos Traganitis

The paper studies the suppression of cross-tier inter-cell interference (ICI) generated by a macro base station (MBS) to pico user equipments (PUEs) in heterogeneous networks (HetNets). Different from existing ICI avoidance schemes such as…

信息论 · 计算机科学 2015-10-28 Shengqian Han , Chenyang Yang , Pan Chen

Applications of intelligent reflecting surfaces (IRSs) in wireless networks have attracted significant attention recently. Most of the relevant literature is focused on the single cell setting where a single IRS is deployed and perfect…

信号处理 · 电气工程与系统科学 2021-04-02 Junghoon Kim , Seyyedali Hosseinalipour , Taejoon Kim , David J. Love , Christopher G. Brinton

Inter-cell interference (ICI) is one of the most critical factors affecting performance of cellular networks. In this paper, we investigate a joint link adaptation and user scheduling problem for multi-cell downlink employing HARQ…

信息论 · 计算机科学 2015-03-12 Su Min Kim , Bang Chul Jung , Dan Keun Sung

The performance of conventional interference management strategies degrades when interference power is comparable to signal power. We consider a new perspective on interference management using semantic communication. Specifically, a…

信号处理 · 电气工程与系统科学 2024-08-09 Zian Meng , Qiang Li , Ashish Pandharipande , Xiaohu Ge

In this paper, we consider a multiuser MISO downlink cognitive network coexisting with a primary network. With the purpose of exploiting the spatial degree of freedom to counteract the inter-network interference and intra-network…

信息论 · 计算机科学 2013-10-17 Xiaoming Chen , Zhaoyang Zhang , Chau Yuen

Channel state information (CSI) in the interference channel can be used to precode, align, and reduce the dimension of interference at the receivers, to achieve the channel's maximum multiplexing gain, through what is known as interference…

信息论 · 计算机科学 2015-06-03 Omar El Ayach , Robert W. Heath

We introduce a simple yet powerful and versatile analytical framework to approximate the SIR distribution in the downlink of cellular systems. It is based on the mean interference-to-signal ratio and yields the horizontal gap (SIR gain)…

信息论 · 计算机科学 2014-06-12 Martin Haenggi

Efficient channel state information at transmitter (CSIT) for frequency division duplex (FDD) massive MIMO can facilitate its backward compatibility with existing FDD cellular networks. To date, several CSIT estimation schemes have been…

信息论 · 计算机科学 2021-08-24 Yikun Mei , Zhen Gao

The advancement of wireless communication systems toward 5G and beyond is spurred by the demand for high data rates, exceedingly dependable low-latency communication, and extensive connectivity that aligns with sensing requisites such as…

信息论 · 计算机科学 2024-04-10 Mamady Delamou , El Mehdi Amhoud

This correspondence studies the downlink transmission in a multi-cell system, where multiple base stations (BSs) each with multiple antennas cooperatively design their respective transmit beamforming vectors to optimize the overall system…

信息论 · 计算机科学 2015-05-14 Rui Zhang , Shuguang Cui

Multi-antenna precoding effectively mitigates the interference in wireless networks. However, the precoding efficiency can be significantly degraded by the overhead due to the required feedback of channel state information (CSI). This paper…

信息论 · 计算机科学 2010-09-20 Kaibin Huang , Rui Zhang

In this paper, we consider a point-to-point integrated sensing and communication (ISAC) system, where a transmitter conveys a message to a receiver over a channel with memory and simultaneously estimates the state of the channel through the…

信息论 · 计算机科学 2024-12-03 Homa Nikbakht , Michèle Wigger , Shlomo Shamai , H. Vincent Poor

This paper studies the concept of jointly utilizing the data information(DI)and channel state information (CSI) in order to design symbol-level precoders for a multiple input and single output (MISO) downlink channel. In this direction, the…

信息论 · 计算机科学 2015-05-14 Maha Alodeh , Symeon Chatzinotas , Bjorn Ottersten