نتایج جستجو برای: output composition channel
تعداد نتایج: 651778 فیلتر نتایج به سال:
This paper presents an algorithm of blind identification and equalization of finite-impulse-response and multipleinput and multiple-output (FIR MIMO) channels driven by colored signals. This algorithm is an improved realization of a concept referred to as blind identification via decorrelating subchannels (BIDS). This BIDS algorithm first constructs a set of decorrelators which decorrelate the ...
Multiple Input Multiple Output (MIMO) systems has provide high transmission data rate without increasing transmitting power for wireless communication systems. The performance can be further improved by properly estimating the channel at the receiver side. In this paper, investigation on various channel estimation techniques for MIMO-OFDM has been done and a new approach based on time-domain in...
Abstract In this paper, a new method for robust image recovery from noisy transmission based on softbits and Markov random field modeling is proposed. The method aims to exploit the residual redundancy present in the symbols produced by a source encoder together with knowledge about the statistical properties of natural images. The soft-bit information required for reconstruction may either be ...
SUMMARY This paper proposes two space-time joint channel parameter estimation and signal detection algorithms for downlink DS-CDMA systems with multiple-input-multiple-output (MIMO) wireless multipath fading channels. The proposed algorithms initially use the space-time MUSIC to estimate the DOA-delays of the multipath channel. Based on these estimated DOA-delays, a space-time channel decoupler...
e nergy consumption has increased significantly in iran during the recent decades. in this study, an inter-industrial model has been improved to investigate the sources of the changes in the energy consumption of the country. the input-output tables of iran for the years 1988 and 2001 have been employed as the database of the model. the innovation of this research allows the researchers to stud...
Interconnection networks consist of a set of switches interconnected by point-to-point links, and hosts linked to those switches through a network interface card. These networks are becoming increasingly popular as a cost-effective alternative to parallel computers. One of the most wellknown example is the Myrinet network. These networks use techniques and incorporate components that have been ...
We describe a procedure for increasing the fractional delay or delay-bandwidth product of a slow-light system. A broadband input signal is sliced into several frequency bands. The light in each band propagates through a separate channel which possesses a highly reduced group velocity over a narrow frequency band. The output of each channel is then combined to form a single output field. For cer...
TCP is the de facto transport protocol of the Internet, but its shortcomings in the large bandwidth and large latency networks is well documented. We create a set of benchmarks for protocols designed for the large bandwidth-delay product networks. By using the benchmarks to evaluate the leading protocols in network environments that vary in their bandwidth and latency, we found that each protoc...
Empirical distribution of good channel codes with non-vanishing error probability (extended version)
This paper studies several properties of channel codes that approach the fundamental limits of a given (discrete or Gaussian) memoryless channel with a non-vanishing probability of error. The output distribution induced by an ǫ-capacity-achieving code is shown to be close in a strong sense to the capacity achieving output distribution. Relying on the concentration of measure (isoperimetry) prop...
In the last decade the Drosophila larva has evolved into a simple model organism offering the opportunity to integrate molecular genetics with systems neuroscience. This led to a detailed understanding of the neuronal networks for a number of sensory functions and behaviors including olfaction, vision, gustation and learning and memory. Typically, behavioral assays in use exploit simple Petri d...
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