Robust Signaling for Bursty Interference

Autor: Aydin Sezgin, Grace Villacrés, Gonzalo Vazquez-Vilar, Tobias Koch
Rok vydání: 2018
Předmět:
FOS: Computer and information sciences
bursty interference channel
opportunistic rates
Computer science
Computer Science - Information Theory
Code word
General Physics and Astronomy
lcsh:Astrophysics
Data_CODINGANDINFORMATIONTHEORY
02 engineering and technology
Topology
01 natural sciences
Article
ergodic case
010305 fluids & plasmas
sum capacity
lcsh:QB460-466
0103 physical sciences
0202 electrical engineering
electronic engineering
information engineering
channel-state information
Coherence (signal processing)
Ergodic theory
lcsh:Science
Computer Science::Information Theory
quasi-static case
Information Theory (cs.IT)
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS
Transmitter
020206 networking & telecommunications
lcsh:QC1-999
linear deterministic model
Burstiness
Channel state information
lcsh:Q
Bernoulli process
lcsh:Physics
Coding (social sciences)
Zdroj: Entropy
Volume 20
Issue 11
Entropy, Vol 20, Iss 11, p 870 (2018)
ISSN: 1099-4300
DOI: 10.3390/e20110870
Popis: This paper studies a bursty interference channel, where the presence/absence of interference is modeled by a block-i.i.d. Bernoulli process that stays constant for a duration of T symbols (referred to as coherence block) and then changes independently to a new state. We consider both a quasi-static setup, where the interference state remains constant during the whole transmission of the codeword, and an ergodic setup, where a codeword spans several coherence blocks. For the quasi-static setup, we study the largest rate of a coding strategy that provides reliable communication at a basic rate and allows an increased (opportunistic) rate when there is no interference. For the ergodic setup, we study the largest achievable rate. We study how non-causal knowledge of the interference state, referred to as channel-state information (CSI), affects the achievable rates. We derive converse and achievability bounds for (i) local CSI at the receiver side only
(ii) local CSI at the transmitter and receiver side
and (iii) global CSI at all nodes. Our bounds allow us to identify when interference burstiness is beneficial and in which scenarios global CSI outperforms local CSI. The joint treatment of the quasi-static and ergodic setup further allows for a thorough comparison of these two setups.
Databáze: OpenAIRE
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