Journal ArticleDOI
New automatic equaliser employing modulo arithmetic
TLDR
In this paper, it is shown that modulo arithmetic may be used in the inverse filter to eliminate completely the possibility of instability, and a very simple automatic or adaptive equalisation system is presented.Abstract:
The limitations of present automatic and adaptive equalisers stem from the use of feedforward transversal filters. These drawbacks may be obviated by using a feedback transversal filter, the inverse filter, but this is only suitable for limited use since it can be an unstable circuit. It is shown that modulo arithmetic may be used in the inverse filter to eliminate completely the possibility of instability, and a very simple automatic or adaptive equalisation system is presented. Some interesting properties of the modulo inverse filter are included.read more
Citations
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Journal ArticleDOI
Wireless multicarrier communications
TL;DR: This article develops a systematic discrete-time framework and designs novel systems for single- and multiuser wireless multicarrier communications-a field rich in signal processing challenges that holds great potential in various applications including audio/video broadcasting, cable television, modem design, multimedia services, mobile local area networks, and future-generation wideband cellular systems.
Journal ArticleDOI
Nested linear/lattice codes for structured multiterminal binning
Ram Zamir,Shlomo Shamai,Uri Erez +2 more
TL;DR: Nested codes are proposed, or more specifically, nested parity-check codes for the binary case and nested lattices in the continuous case, which connect network information theory with the rich areas of linear codes and lattice codes, and have strong potential for practical applications.
Journal ArticleDOI
A vector-perturbation technique for near-capacity multiantenna multiuser communication-part II: perturbation
TL;DR: A simple encoding algorithm is introduced that achieves near-capacity at sum-rates of tens of bits/channel use and a certain perturbation of the data using a "sphere encoder" can be chosen to further reduce the energy of the transmitted signal.
Journal ArticleDOI
Linear transmit processing in MIMO communications systems
TL;DR: The transmit filters are based on similar optimizations as the respective receive filters with an additional constraint for the transmit power and has similar convergence properties as the receive Wiener filter, i.e., it converges to the matched filter and the zero-forcing filter for low and high signal-to-noise ratio, respectively.
Journal ArticleDOI
Modulation and coding for linear Gaussian channels
G.D. Forney,G. Ungerboeck +1 more
TL;DR: This paper surveys how the capacity of the linear Gaussian channel has been met during the past half century, and new capacity-approaching techniques include turbo coding and decoding, multilevel coding, and combined coding/precoding for intersymbol-interference channels.
References
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Dissertation
Data transmission over telephone lines
TL;DR: This thesis is concerned with the design of novel equipment to be used as part of the data modem, thereby enabling data to be transmitted at a high rate, and with much reduced error rate.