Transmission of correlated sources over a fading multiple access channel

Rajesh, R.; Sharma, Vinod

doi:10.1109/allerton.2008.4797647

Cited by 7 publications

(9 citation statements)

References 25 publications

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“…Rajesh and Sharma consider discrete alphabet sources [ 73 ] and the presence of side information over the Gaussian MAC [ 74 ]; they also compare three different joint source-channel coding schemes. The same authors study the Orthogonal MAC in [ 75 , 76 ], and the fading Gaussian MAC in [ 77 ]. Several types of multiuser channels, not necessarily Gaussian, with correlated source side information are studied in [ 78 ], and optimality of separation is proved in those cases for the joint source-channel code, though not yielding the same codes of the source and channel coding problems considered separately.…”

Section: Information Theory Approachesmentioning

confidence: 99%

Surveying Multidisciplinary Aspects in Real-Time Distributed Coding for Wireless Sensor Networks

Braccini

Davoli

Marchese

et al. 2015

Sensors

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Wireless Sensor Networks (WSNs), where a multiplicity of sensors observe a physical phenomenon and transmit their measurements to one or more sinks, pertain to the class of multi-terminal source and channel coding problems of Information Theory. In this category, “real-time” coding is often encountered for WSNs, referring to the problem of finding the minimum distortion (according to a given measure), under transmission power constraints, attainable by encoding and decoding functions, with stringent limits on delay and complexity. On the other hand, the Decision Theory approach seeks to determine the optimal coding/decoding strategies or some of their structural properties. Since encoder(s) and decoder(s) possess different information, though sharing a common goal, the setting here is that of Team Decision Theory. A more pragmatic vision rooted in Signal Processing consists of fixing the form of the coding strategies (e.g., to linear functions) and, consequently, finding the corresponding optimal decoding strategies and the achievable distortion, generally by applying parametric optimization techniques. All approaches have a long history of past investigations and recent results. The goal of the present paper is to provide the taxonomy of the various formulations, a survey of the vast related literature, examples from the authors' own research, and some highlights on the inter-play of the different theories.

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Section: Information Theory Approachesmentioning

confidence: 99%

Surveying Multidisciplinary Aspects in Real-Time Distributed Coding for Wireless Sensor Networks

Braccini

Davoli

Marchese

et al. 2015

Sensors

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“…P roof : Fix p(w 1 |u 1 , z 1 ), p(w 2 |u 2 , z 2 ), p(x 1 |w 1 ,ĥ 1 ,ĥ 2 Thus we can use the extended Markov Lemma ( [18]) and hence (u…”

Section: Appendixmentioning

confidence: 99%

“…Joint source channel coding for correlated data on a fading MAC with perfect CSIT and perfect CSIR is studied in [18]. Various power allocation schemes are studied and it is shown that the Random TDMA is suboptimal for transmission of correlated sources.…”

Section: Introduction and Surveymentioning

confidence: 99%

Distributed transmission of functions of correlated sources over a fading multiple access channel

Rajesh

Sharma

2009

2009 47th Annual Allerton Conference on Communication, Control, and Computing (Allerton)

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Abstract-In this paper we address the problem of distributed transmission of functions of correlated sources over a fast fading multiple access channel (MAC). This is a basic building block in a hierarchical sensor network used in estimating a random field where the cluster head is interested only in estimating a function of the observations. The observations are transmitted to the cluster head through a fast fading MAC. We provide sufficient conditions for lossy transmission when the encoders and decoders are provided with partial information about the channel state. Furthermore signal side information maybe available at the encoders and the decoder. Various previous studies are shown as special cases. Efficient jointsource channel coding schemes are discussed for transmission of discrete and continuous alphabet sources to recover function values.

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“…However, there arises a problem that if the information sequences are correlated, as in WSN, the SW and MAC regions, referred to as SW-MAC regions, have to intersect for the successful transmission. Even though having an intersection is a sufficient condition [4], it has been widely used in [5], [6] when analyzing the probability of successful transmissions. Reference [5] analyzes the outage probability of a two-correlated-source transmission system over independent block Rayleigh fading channels where both the two sources are aimed to be recovered.…”

Section: Introductionmentioning

confidence: 99%

Outage Probability of One-Source-With-One- Helper Sensor Systems in Block Rayleigh Fading Multiple Access Channels

Song

Cheng

et al. 2021

IEEE Sensors J.

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Two correlated sources are transmitted over a block Rayleigh fading multiple access channel (MAC), where information recovery from only one of the sources is aimed at, and the other is used as a helper which helps recover the source sequences at the destination. In this paper, the successful transmission is defined as in the case the transmission rates satisfy the intersection of both the MAC region and the Slepian-Wolf (SW) region with a helper, referred to as h-SW region, even though it is a sufficient condition. Then, the outage is defined as the average probability that the two regions do not have an intersection. The explicit expressions of the outage probability of the system are derived, in the form of multiple integrals with respect to the probability density function of instantaneous signal-to-noise ratios of each link. To have an indepth insight regarding the contributions of some special cases to the successful transmission probability, the occurrence probabilities of these cases are also evaluated. The results indicate that outage probabilities decrease as the correlation between the source and helper information increases. The impacts of geometric gains of each link and the correlation of each link's fading variation are also considered. The most significant finding of this paper is that h-SW over a MAC improves the throughput efficiency compared to the orthogonal transmission both in independent and correlated block Rayleigh fading channels without sacrificing the outage probability.

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Transmission of correlated sources over a fading multiple access channel

Cited by 7 publications

References 25 publications

Surveying Multidisciplinary Aspects in Real-Time Distributed Coding for Wireless Sensor Networks

Surveying Multidisciplinary Aspects in Real-Time Distributed Coding for Wireless Sensor Networks

Distributed transmission of functions of correlated sources over a fading multiple access channel

Outage Probability of One-Source-With-One- Helper Sensor Systems in Block Rayleigh Fading Multiple Access Channels

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