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Complex orthogonal design (COD) with parameter $[p, n, k]$ is a combinatorial design used in space-time block codes (STBCs). For STBC, $n$ is the number of antennas, $k/p$ is the rate, and $p$ is the decoding delay. A class of rate $1/2$…

信息论 · 计算机科学 2016-09-20 Xiaodong Liu , Yuan Li , Haibin Kan

Complex Orthogonal Design (COD) codes are known to have the lowest detection complexity among Space-Time Block Codes (STBCs). However, the rate of square COD codes decreases exponentially with the number of transmit antennas. The…

信息论 · 计算机科学 2016-11-17 Amr Ismail , Jocelyn Fiorina , Hikmet Sari

Retrieving spatial information and understanding the semantic information of the surroundings are important for Bird's-Eye-View (BEV) semantic segmentation. In the application of autonomous driving, autonomous vehicles need to be aware of…

计算机视觉与模式识别 · 计算机科学 2023-12-08 Qiuxiao Chen , Xiaojun Qi

This paper considers the problem of channel coding with a given (possibly suboptimal) maximum-metric decoding rule. A cost-constrained random-coding ensemble with multiple auxiliary costs is introduced, and is shown to achieve error…

信息论 · 计算机科学 2014-03-05 Jonathan Scarlett , Alfonso Martinez , Albert Guillén i Fàbregas

Consider the identification (ID) via channels problem, where a receiver wants to decide whether the transmitted identifier is its identifier, rather than decoding the identifier. This model allows to transmit identifiers whose size scales…

信息论 · 计算机科学 2021-06-28 Onur Günlü , Joerg Kliewer , Rafael F. Schaefer , Vladimir Sidorenko

We improve the existing achievable rate regions for causal and for zero-delay source coding of stationary Gaussian sources under an average mean squared error (MSE) distortion measure. To begin with, we find a closed-form expression for the…

信息论 · 计算机科学 2011-05-03 Milan S. Derpich , Jan Østergaard

Locally repairable codes (LRCs) have emerged as an important coding scheme in distributed storage systems (DSSs) with relatively low repair cost by accessing fewer non-failure nodes. Theoretical bounds and optimal constructions of LRCs have…

信息论 · 计算机科学 2023-03-14 Weijun Fang , Fang-Wei Fu , Bin Chen , Shu-Tao Xia

In this paper, we perform a threshold analysis of braided convolutional codes (BCCs) on the additive white Gaussian noise (AWGN) channel. The decoding thresholds are estimated by Monte-Carlo density evolution (MC-DE) techniques and compared…

信息论 · 计算机科学 2018-03-01 Muhammad Umar Farooq , Saeedeh Moloudi , Michael Lentmaier

LDPC convolutional codes have been shown to be capable of achieving the same capacity-approaching performance as LDPC block codes with iterative message-passing decoding. In this paper, asymptotic methods are used to calculate a lower bound…

信息论 · 计算机科学 2016-11-15 David G. M. Mitchell , Ali E. Pusane , Kamil Sh. Zigangirov , Daniel J. Costello,

In next-generation wireless networks, low latency often necessitates short-length codewords that either do not use channel state information (CSI) or rely solely on CSI at the receiver (CSIR). Gaussian codes that achieve capacity for AWGN…

信息论 · 计算机科学 2024-09-16 Rishabh Sharad Pomaje , Rajshekhar V Bhat

Orthogonal designs are fundamental mathematical notions used in the construction of space time block codes for wireless transmissions. Designs have two important parameters, the rate and the decoding delay; the main problem of the theory is…

信息论 · 计算机科学 2012-03-05 Sophie Morier-Genoud , Valentin Ovsienko

Locally recoverable (LRC) codes have recently been a focus point of research in coding theory due to their theoretical appeal and applications in distributed storage systems. In an LRC code, any erased symbol of a codeword can be recovered…

信息论 · 计算机科学 2018-05-16 Abhishek Agarwal , Alexander Barg , Sihuang Hu , Arya Mazumdar , Itzhak Tamo

We propose a novel coded integrated passive sensing and communication (CIPSAC) system with orthogonal frequency division multiplexing (OFDM), where a multi-antenna base station (BS) passively senses the parameters of the targets and decodes…

信号处理 · 电气工程与系统科学 2025-02-19 Chenghong Bian , Kaitao Meng , Huihui Wu , Yumeng Zhang , Deniz Gunduz

In this paper, we consider a quasi-orthogonal (QO) space-time block code (STBC) with minimum decoding complexity (MDC-QO-STBC). We formulate its algebraic structure and propose a systematic method for its construction. We show that a…

信息论 · 计算机科学 2007-07-13 Chau Yuen , Yong Liang Guan , Tjeng Thiang Tjhung

Spatially coupled, parallel concatenated codes (SC-PCCs) have been shown to approach channel capacity when decoded using optimal iterative methods. However, under complexity constraints such decoding strategies can result in unacceptable…

信息论 · 计算机科学 2021-09-07 Andrew D. Cummins , David G. M. Mitchell , Daniel J. Costello,

A new channel coding approach was proposed in [1] for random multiple access communication over the discrete-time memoryless channel. The coding approach allows users to choose their communication rates independently without sharing the…

信息论 · 计算机科学 2016-11-15 Zheng Wang , Jie Luo

Existing literature on source coding with side information (SCSI) mostly uses the state-of-the-art channel codes namely LDPC codes, turbo codes, and their variants and assume classical unique decoding. In this paper, we present an algebraic…

信息论 · 计算机科学 2011-11-01 Mortuza Ali , Margreta Kuijper

Polarization-adjusted convolutional (PAC) codes were recently proposed and arouse the interest of the channel coding community because they were shown to approach theoretical bounds for the (128,64) code size. In this letter, we propose…

信息论 · 计算机科学 2020-11-09 Thibaud Tonnellier , Warren J. Gross

Recent work has shown that properly designed protograph-based LDPC codes may have minimum distance linearly increasing with block length. This notion rests on ensemble arguments over all possible expansions of the base protograph. When…

信息论 · 计算机科学 2012-02-17 Brian K. Butler , Paul H. Siegel

In this paper asymptotic methods are used to form lower bounds on the free distance to constraint length ratio of several ensembles of regular, asymptotically good, protograph-based LDPC convolutional codes. In particular, we show that the…

信息论 · 计算机科学 2008-04-29 David G. M. Mitchell , Ali E. Pusane , Norbert Goertz , Daniel J. Costello