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We show that the mismatched capacity of binary discrete memoryless channels can be improved by channel combining and splitting via Ar{\i}kan's polar transformations. We also show that the improvement is possible even if the transformed…

信息论 · 计算机科学 2014-01-24 Mine Alsan , Emre Telatar

Channel pruning, which seeks to reduce the model size by removing redundant channels, is a popular solution for deep networks compression. Existing channel pruning methods usually conduct layer-wise channel selection by directly minimizing…

计算机视觉与模式识别 · 计算机科学 2019-05-14 Yiming Hu , Siyang Sun , Jianquan Li , Jiagang Zhu , Xingang Wang , Qingyi Gu

Key for solving fine-grained image categorization is finding discriminate and local regions that correspond to subtle visual traits. Great strides have been made, with complex networks designed specifically to learn part-level discriminate…

计算机视觉与模式识别 · 计算机科学 2021-08-11 Dongliang Chang , Yifeng Ding , Jiyang Xie , Ayan Kumar Bhunia , Xiaoxu Li , Zhanyu Ma , Ming Wu , Jun Guo , Yi-Zhe Song

In this study we consider rateless coding over discrete memoryless channels (DMC) with feedback. Unlike traditional fixed-rate codes, in rateless codes each codeword is infinitely long, and the decoding time depends on the confidence level…

信息论 · 计算机科学 2012-01-30 Navot Blits

Channel pruning is one of the predominant approaches for deep model compression. Existing pruning methods either train from scratch with sparsity constraints on channels, or minimize the reconstruction error between the pre-trained feature…

计算机视觉与模式识别 · 计算机科学 2019-01-15 Zhuangwei Zhuang , Mingkui Tan , Bohan Zhuang , Jing Liu , Yong Guo , Qingyao Wu , Junzhou Huang , Jinhui Zhu

In uplink non-orthogonal multiple access (NOMA) channels, the existing cooperative successive interference cancellation (SIC) and power control (PC) schemes lack the capability of achieving the full capacity region, which restricts the…

信息论 · 计算机科学 2022-02-02 Hongwu Liu , Zhiquan Bai , Hongjiang Lei , Gaofeng Pan , Kyeong Jin Kim , Theodoros A. Tsiftsis

The use of channel output feedback to improve the reliability of fading channels has received scant attention in the literature. In most work on feedback for fading channels, only channel state information (CSI) feedback has been exploited…

信息论 · 计算机科学 2012-04-12 Mayur Agrawal , David J. Love , Venkataramanan Balakrishnan

There are different inequivalent ways to define the R\'enyi capacity of a channel for a fixed input distribution $P$. In a 1995 paper Csisz\'ar has shown that for classical discrete memoryless channels there is a distinguished such quantity…

量子物理 · 物理学 2023-01-18 Milán Mosonyi , Tomohiro Ogawa

We propose a unified rare-event estimator for the performance evaluation of wireless communication systems. The estimator is derived from the well-known multilevel splitting algorithm. In its original form, the splitting algorithm cannot be…

信息论 · 计算机科学 2019-08-29 Nadhir Ben Rached , Daniel MacKinlay , Zdravko Botev , Raul Tempone , Mohamed-Slim Alouini

Many practical wireless communications systems select their transmit rate from a finite set of modulation and coding schemes, which correspond to a set of discrete rates. In this paper, we therefore formulate a joint coordinated precoding…

信息论 · 计算机科学 2016-04-20 Rasmus Brandt , Mats Bengtsson

Memoryless channels with synchronization errors as defined by a stochastic channel matrix allowing for symbol insertions and deletions in addition to random errors are considered. Such channels are information stable, hence their Shannon…

信息论 · 计算机科学 2011-03-01 Tolga M Duman

Wideband wireless channel is a time dispersive channel and becomes strongly frequency-selective. However, in most cases, the channel is composed of a few dominant taps and a large part of taps is approximately zero or zero. They are often…

信息论 · 计算机科学 2010-05-14 Guan Gui , An-min Huang , Qun Wan

Distributed phased arrays based multiple-input multiple-output (DPA-MIMO) is a newly introduced architecture that enables both spatial multiplexing and beamforming while facilitating highly reconfigurable hardware implementation in…

信息论 · 计算机科学 2020-08-21 Yu Zhang , Yiming Huo , Dongming Wang , Xiaodai Dong , Xiaohu You

The cognitive interference channel with unidirectional destination cooperation (CIFC-UDC) is a variant of the cognitive interference channel (CIFC) where the cognitive (secondary) destination not only decodes the information sent from its…

信息论 · 计算机科学 2011-02-21 Hsuan-Yi Chu , Hsuan-Jung Su

Rate splitting multiple access (RSMA) and reconfigurable intelligent surface (RIS) are two prospective technologies for improving the spectral and energy efficiency in future wireless communication systems. In this work, we investigate a…

信号处理 · 电气工程与系统科学 2024-10-17 Sadaf Syed , Michael Joham , Wolfgang Utschick

We consider a basic joint communication and sensing setup comprising a transmitter, a receiver and a sensor. The transmitter sends a codeword to the receiver through a discrete memoryless channel, and the receiver is interested in decoding…

信息论 · 计算机科学 2024-12-09 Han Wu , Hamdi Joudeh

In this paper, we make use of channel symmetry properties to determine the capacity region of three types of two-way networks: (a) two-user memoryless two-way channels (TWCs), (b) two-user TWCs with memory, and (c) three-user…

信息论 · 计算机科学 2019-10-02 Jian-Jia Weng , Lin Song , Fady Alajaji , Tamás Linder

In distributed communication, each transmitter prepares an ensemble of channel codes. To encode a message, a transmitter chooses a channel code individually without sharing the coding choice with other transmitters or with the receiver.…

信息论 · 计算机科学 2018-05-08 Yanru Tang , Faeze Heydaryan , Jie Luo

The capacity-distortion (C-D) trade-offs for joint state and message communications (JSMC) over single- and multi-user channels are investigated, where the transmitters have access to generalized state information and feedback while the…

信息论 · 计算机科学 2025-02-14 Xinyang Li , Yiqi Chen , Vlad C. Andrei , Aladin Djuhera , Ullrich J. Mönich , Holger Boche

Full-duplex communication has the potential to substantially increase the throughput in wireless networks. However, the benefits of full-duplex are still not well understood. In this paper, we characterize the full-duplex rate gains in both…

信息论 · 计算机科学 2016-06-10 Jelena Marašević , Jin Zhou , Harish Krishnaswamy , Yuan Zhong , Gil Zussman