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A general fading model for multipath channels between two non-parallel continuous-aperture arrays (CAPAs) is proposed. Building on this model, the performance of diversity and multiplexing achieved by CAPAs over fading channels is analyzed.…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Chongjun Ouyang , Zhaolin Wang , Xingqi Zhang , Yuanwei Liu

With the completion of standardization of fifth-generation (5G) networks, the researchers have begun visioning sixth-generation (6G) networks that are predicted to be human-centric. Hence, similar to 5G networks, besides high data rate,…

Continuous aperture arrays (CAPAs) provide a theoretical upper bound on the performance of densely packed antenna arrays, but their analysis is limited by the lack of closed-form signal-to-noise ratio (SNR) distributions under realistic…

Signal Processing · Electrical Eng. & Systems 2026-03-13 Amy S. Inwood , Abdulla Firag , Peter J. Smith , Michail Matthaiou

In this paper we consider a channel model that is often used to describe the mobile wireless scenario: multiple-antenna additive white Gaussian noise channels subject to random (fading) gain with full channel state information at the…

Information Theory · Computer Science 2018-06-28 Austin Collins , Yury Polyanskiy

Two-wave with diffuse power (TWDP) is one of the most promising distribution for description of a small-scale fading in the emerging mmWave band. However, traditional error performance analysis in these channels faces two fundamental…

Signal Processing · Electrical Eng. & Systems 2021-09-14 Almir Maric , Pamela Njemcevic

In [1], we introduced a new, matrix algebraic, performance analysis framework for wireless systems with fading channels based on the matrix exponential distribution. The main idea was to use the compact, powerful, and easy-to-use, matrix…

Information Theory · Computer Science 2016-12-21 Peter Larsson , Lars K. Rasmussen , Mikael Skoglund

This paper proposes new accurate approximations for average error probability (AEP) of a communication system employing either $M$-phase-shift keying (PSK) or differential quaternary PSK with Gray coding (GC-DQPSK) modulation schemes over…

Information Theory · Computer Science 2020-09-29 Yassine Mouchtak , Faissal El Bouanani

In this contribution, models of wireless channels are derived from the maximum entropy principle, for several cases where only limited information about the propagation environment is available. First, analytical models are derived for the…

Information Theory · Computer Science 2007-07-13 M. Guillaud , M. Debbah , A. L. Moustakas

In this study, the product of two independent and non-identically distributed (i.n.i.d.) random variables (RVs) for \k{appa}-{\mu} fading distribution and {\alpha}-{\mu} fading distribution is considered. The method of the product model of…

Information Theory · Computer Science 2018-01-01 He Huang

We introduce and characterize the Multi-cluster Two-Wave (MTW) fading model, which generalizes \textit{both} the Durgin's Two-Wave with Diffuse Power (TWDP) and the $\kappa$-$\mu$ models under a common umbrella. The MTW model consists of an…

Information Theory · Computer Science 2024-10-28 Maryam Olyaee , Juan P. Pena-Martin , F. J. Lopez-Martinez , Juan M. Romero-Jerez

The effective throughput of multiple-input single-output (MISO) wireless communication systems over $\kappa-\mu$ shadowed fading channels is analysed. To obtain exact closed-from expression, the moment generating function (MGF) of the…

Information Theory · Computer Science 2018-05-01 H. Al-Hmood , H. S. Al-Raweshidy

In this paper, we analyze the performance of cognitive radio (CR) systems over different composite generalized multipath /shadowed fading scenarios. The \k{appa}-{\mu} shadowed and Fisher-Snedecor F fading channels which are proposed as a…

Information Theory · Computer Science 2018-07-27 Hussien Al-Hmood

In this paper, we investigate the secrecy performance of stochastic MIMO wireless networks over small-scale $\alpha$-$\mu$ fading channels, where both the legitimate receivers and eavesdroppers are distributed with two independent…

Information Theory · Computer Science 2018-10-03 Long Kong , Satyanarayana Vuppala , Georges Kaddoum

In this paper, a novel unified analytical expression for average bit error rates (ABER) and average channel capacity (ACC) is presented for the ${\kappa}-{\mu}$ shadowed fading model. This new shadowed fading model has shown to be suitable…

Information Theory · Computer Science 2017-03-14 Ehab Salahat , Ali Hakam

The incomplete moment generating function (IMGF) has paramount relevance in communication theory, since it appears in a plethora of scenarios when analyzing the performance of communication systems. We here present a general method for…

Information Theory · Computer Science 2024-10-30 F. J. Lopez-Martinez , J. M. Romero-Jerez , J. F. Paris

This work is devoted to the derivation of novel analytic expressions and bounds for a family of special functions that are useful in wireless communication theory. These functions are the well-known Nuttall $Q{-}$function, the incomplete…

Energy Harvesting (EH) has emerged as a promising technique for Green Communications and it is a novel technique to prolong the lifetime of the wireless networks with replenishable nodes. In this paper, we consider the energy shortage…

Information Theory · Computer Science 2021-04-07 Mahmood Mohassel Feghhi , Aliazam Abbasfar , Mahtab Mirmohseni

Wireless power transfer and energy harvesting have attracted a significant research attention in terms of their application in cooperative relaying systems. Most of existing works in this field focus on the half-duplex (HD) relaying…

Signal Processing · Electrical Eng. & Systems 2018-08-09 Galymzhan Nauryzbayev , Mohamed Abdallah , Khaled M. Rabie

Sparse autoencoders (SAEs) decompose transformer residual streams into interpretable feature dictionaries, yet the relationship between SAE width and causal influence on model output has not been systematically characterised. We introduce…

Machine Learning · Computer Science 2026-05-12 Nilesh Sarkar , Dawar Jyoti Deka

Consider $n$ source-destination pairs randomly located in a shared wireless medium, resulting in interference between different transmissions. All wireless links are modeled by independently and identically distributed (i.i.d.) random…

Information Theory · Computer Science 2013-06-25 Seyed Pooya Shariatpanahi , Babak Hossein Khalaj , Kasra Alishahi , Hamed Shah-Mansouri