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Future wireless communication systems must simultaneously address multiple challenges to ensure accurate data detection, deliver high Quality of Service (QoS), adding enable a high data transmission with low system design. Additionally,…

信息论 · 计算机科学 2024-10-03 Amina Darghouthi , Abdelhakim Khlifi , Belgacem Chibani

We consider the decoding of bit interleaved coded modulation (BICM) applied to multiband OFDM for practical scenarios where only a noisy (possibly very bad) estimate of the channel is available at the receiver. First, a decoding metric…

网络与互联网体系结构 · 计算机科学 2007-08-13 Sajad Sadough , Pablo Piantanida , Pierre Duhamel

In this paper, we study the problem of uplink channel estimation for near-filed orthogonal frequency division multiplexing (OFDM) systems, where a base station (BS), equipped with an extremely large-scale antenna array (ELAA), serves…

信号处理 · 电气工程与系统科学 2026-01-27 Jionghui Wang , Jun Fang , Hongbin Li , Boyu Ning

Wireless communication is the most effective communication to convey audio or video information among the population. It enables the masses to connect throughout the world. Wireless technologies improve the lifestyle of individuals in rural…

信号处理 · 电气工程与系统科学 2020-02-13 Usha S. M , Mahesh H. B

A novel modulation scheme termed orthogonal frequency-division multiplexing with subcarrier number modulation (OFDM-SNM) has been proposed and regarded as one of the promising candidate modulation schemes for next generation networks.…

信号处理 · 电气工程与系统科学 2019-05-02 Shuping Dang , Guoqing Ma , Basem Shihada , Mohamed-Slim Alouini

Achieving reliable communication over different channels and modes is one of the main goals of Mode Division Multiplexing-Wavelength Division Multiplexing (MDM-WDM) communication networks. The reliability can be described by minimum Signal…

信号处理 · 电气工程与系统科学 2021-07-27 Mohammad Ali Amirabadi , Mohammad Hossein Kahaei , S. Alireza Nezamalhosseini

This paper presents several analytic closed-form approximations of the aggregated interference statistics within the framework of uplink massive machine-type communications (mMTC), taking into account the random activity of the sensors.…

信号处理 · 电气工程与系统科学 2024-12-10 Sergi Liesegang , Antonio Pascual-Iserte , Olga Muñoz

In this paper, resource allocation for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) downlink networks with large numbers of base station antennas is studied. Assuming perfect channel state…

信息论 · 计算机科学 2012-11-16 Derrick Wing Kwan Ng , Robert Schober

We present a channel spectral estimator for OFDM signals containing pilot carriers, assuming a known delay spread or a bound on this parameter. The estimator is based on modeling the channel's spectrum as a band-limited function, instead of…

信息论 · 计算机科学 2014-05-16 J. Selva

Movable antenna (MA) technology offers a flexible approach to enhancing wireless channel conditions by adjusting antenna positions within a designated region. While most existing works focus on narrowband MA systems, this paper investigates…

信号处理 · 电气工程与系统科学 2025-10-03 Ruixi Feng , Weidong Mei , Lele Lu , Xin Wei , Zhi Chen , Zhen Gao , Boyu Ning

The exact closed-form expressions for outage probability and bit error rate of spectrum sharing-based multi-hop decodeand- forward (DF) relay networks in non-identical Rayleigh fading channels are derived. We also provide the approximate…

信息论 · 计算机科学 2013-01-04 Vo Nguyen Quoc Bao , Tran Thien Thanh , Tuan Duc Nguyen , Thanh Dinh Vu

We address a decentralized wireless communication network with a fixed number $u$ of frequency sub-bands to be shared among $N$ transmitter-receiver pairs. It is assumed that the number of users $N$ is a random variable with a given…

信息论 · 计算机科学 2009-12-01 Kamyar Moshksar , Alireza Bayesteh , Amir K. Khandani

Orthogonal frequency division multiplexing (OFDM) has been widely used in communication systems operating in the millimeter wave (mmWave) band to combat frequency-selective fading and achieve multi-Gbps transmissions, such as IEEE 802.15.3c…

信息论 · 计算机科学 2017-09-06 Hanqing Wang , Chao-Kai Wen , Shi Jin

With the development of high speed trains (HST) in many countries, providing broadband wireless services in HSTs is becoming crucial. Orthogonal frequency-division multiplexing (OFDM) has been widely adopted for broadband wireless…

信号处理 · 电气工程与系统科学 2020-03-06 Xiang Ren , Wen Chen , Meixia Tao

Rate outage probability is an important performance metric to measure the level of quality of service (QoS) in the 4th Generation (4G) broadband access networks. Thus, in this paper, we calculate a closed form expression of the rate outage…

网络与互联网体系结构 · 计算机科学 2013-04-03 Mohammad Hayajneh , Najah AbuAli

In this paper, a new mathematical framework to the analysis of millimeter wave cellular networks is introduced. Its peculiarity lies in considering realistic path-loss and blockage models, which are derived from recently reported…

信息论 · 计算机科学 2016-11-15 Marco Di Renzo

This paper provides a comprehensive analysis and theoretical foundation for next-generation backscatter networks that move beyond communication and integrate RF location sensing capabilities. An end-to-end system model for wideband OFDM…

Spectral efficiency of low-density spreading non-orthogonal multiple access channels in the presence of fading is derived for linear detection with independent decoding as well as optimum decoding. The large system limit, where both the…

信息论 · 计算机科学 2018-01-30 Mai T. P. Le , Guido Carlo Ferrante , Tony Q. S. Quek , Maria-Gabriella Di Benedetto

We consider the downlink of a MIMO-OFDM wireless systems where the base-station (BS) has M antennas and serves K single-antenna user terminals (UT) with K larger than or equal to M. Users estimate their channel vectors from common downlink…

信息论 · 计算机科学 2008-12-01 Hooman Shirani-Mehr , Daniel N. Liu , Giuseppe Caire

Compressive Sensing has well boosted massive random access protocols over the last decade. In this paper we apply an orthogonal FFT basis as it is used in OFDM, but subdivide its image into so-called sub-channels and let each sub-channel…

信息论 · 计算机科学 2023-07-19 Gerhard Wunder , Axel Flinth , Benedikt Groß