Wireless systems and interference avoidance

Motivated by the emergence of programmable radios, we seek to understand a new class of communication system where pairs of transmitters and receivers can adapt their modulation/demodulation method in the presence of interference to achieve better performance. Using signal to interference ratio as a...

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Vydané v:IEEE transactions on wireless communications Ročník 1; číslo 3; s. 415 - 428
Hlavní autori: Rose, C., Ulukus, S., Yates, R.D.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Piscataway, NJ IEEE 01.07.2002
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Applied sciences
Deletion
Demodulation
Detection, estimation, filtering, equalization, prediction
Distributed algorithms
Exact sciences and technology
Extraterrestrial measurements
Information, signal and communications theory
Interference
Iterative methods
Modulation
Modulation coding
Modulation, demodulation
Multiaccess communication
Optimization
Radio transmitters
Receivers
Signal and communications theory
Signal, noise
Stability
Synchronous
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Waveforms
Wireless communication
Noise reduction
Synchronous transmission
Wireless telecommunication
Code division multiple access
Distributed algorithm
Iterative method
Adaptive modulation
Signal detection
Optimization
ISSN:1536-1276, 1558-2248
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Popis
Shrnutí:Motivated by the emergence of programmable radios, we seek to understand a new class of communication system where pairs of transmitters and receivers can adapt their modulation/demodulation method in the presence of interference to achieve better performance. Using signal to interference ratio as a metric and a general signal space approach, we present a class of iterative distributed algorithms for synchronous systems which results in an ensemble of optimal waveforms for multiple users connected to a common receiver (or colocated independent receivers). That is, the waveform ensemble meets the Welch (1974) bound with equality and, therefore, achieves minimum average interference over the ensemble of signature waveforms. We derive fixed points for a number of scenarios, provide examples, look at ensemble stability under user addition and deletion as well as provide a simplistic comparison to synchronous code-division multiple-access. We close with suggestions for future work.
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ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2002.800540