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Rayleigh Fading Multiple Access Channel without Channel State Information

Publications associées (126)

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Joint Compensation of IQ Imbalance and Phase Noise in OFDM Systems

Ali H. Sayed

The joint effects of IQ imbalance and phase noise on OFDM systems are analyzed, and a compensation scheme is proposed to improve the system performance. The scheme consists of a joint channel estimation algorithm and a joint data symbol estimation algorith ...

IEEE2006

Convergence analysis for sequential Monte Carlo receivers in communications applications

Volkan Cevher

Recently, sequential Monte Carlo methods have been used in the telecommunications field, finding application in receiver design. Several properties of these receivers make their designs very attractive. These receivers do not require channel state informat ...

2006

On Successive Refinement of Diversity for fading ISI channels

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Abstract—Rate and diversity impose a fundamental tradeoff in communications. This tradeoff was investigated for IntersymbolInterference (ISI) channels in [4]. A different point of view was explored in [1] where high-rate codes were designed so that they ha ...

2006

Kurtosis Constraints In Communication Over Fading Channels

Emre Telatar, Sibi Raj Bhaskaran Pillai

The kurtosis of a signal is a quantitative measure of how `peaky' it is. In this paper we consider two scenarios of communication over fading channels with kurtosis constraints: in the first, we analyze a non-coherent Rayleigh fading channel where the inpu ...

2006

Adaptive Subchip Multipath Resolving for Wireless Location Systems

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Reliable positioning of cellular users in a mobile environment requires accurate resolving of overlapping multipath components. However, this task is difficult due to fast channel fading conditions and data ill-conditioning, which limit the performance of ...

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On cooperation via noisy feedback

Michael Christoph Gastpar

An upper bound is established on the usefulness of noisy feedback for the two-user multiple-access channel (MAC). The bound generalizes a dependence-balance argument developed by Hekstra and Willems for the common-output two-way channel and the MAC with no ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

Multistandard carrier generation system for quad-band GSM/WCDMA (FDD-TDD)/WLAN (802.11 a-b-g) radio

Adil Koukab

A compact carrier generation system enabling proper interoperability among quad-band GSM, WCDMA (FDD and TDD) and WLAN (802.11a/b/g) standard is developed. The implementation is achieved in 0.25μm BiCMOS-SiGe process. The measured tuning range is higher th ...

2006

On noisy feedback for interference channels

Michael Christoph Gastpar

An upper bound is established on the usefulness of noisy feedback for the interference channel (IC). The bound is based on the Hekstra-Willems dependence-balance arguments for two-way channels. For Gaussian ICs, the results suggest that feedback loses its ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2006

Impact of Interferences on Connectivity in Ad Hoc Networks

Patrick Thiran, Olivier Dousse

We study the impact of interferences on the connectivity of large-scale ad-hoc networks, using percolation theory. We assume that a bi-directional connection can be set up between two nodes if the signal to noise ratio at the receiver is larger than some t ...

2005

Cooperative strategies and capacity theorems for relay networks

Michael Christoph Gastpar

Coding strategies that exploit node cooperation are developed for relay networks. Two basic schemes are studied: the relays decode-and-forward the source message to the destination, or they compress-and-forward their channel outputs to the destination. The ...

2005