maximum likelihood
Maximum-Likelihood Carrier Frequency Offset Estimation for OFDM Systems in Fading Channels
White Paper This paper presents two maximum-likelihood CFO estimation schemes, one in frequency domain and another in time-domain, both under Doppler fading. Apart from improved accuracy, the time-domain... [13 Apr 2007]
Maximum Likelihood Data-Aided Phase Estimation in CDMA Communication Systems With QPSK Modulation
White Paper Instead of dealing with these users separately, in a parallel way, this paper introduces Maximum-Likelihood (ML) joint phase estimation for a Data-Aided (DA), QPSK-modulated scenario. In CDMA... [24 Jul 2004]
Constrained Maximum-Likelihood Detection in CDMA
White Paper The detection strategy usually denoted optimal multiuser detection is equivalent to the solution of a (0, 1)-constrained maximum-likelihood (ML) problem, a problem which is known to be NP-hard. In... [10 Apr 2008]
Interpolation-Based Maximum Likelihood Channel Estimation Using OFDM Pilot Symbols
White Paper An interpolation-based maximum likelihood channel estimation scheme using OFDM pilot symbols is proposed. Instead of direction estimation of the frequency response on each subchannel, an interpolation... [10 Apr 2008]
Cryonics, Cryptography, and Maximum Likelihood Estimation
White Paper The damage done by the cryonic suspension (and the probably poor condition of the patient before the suspension even began) are quite sufficient to insure that nothing even remotely resembling these scenarios will ever take place. [25 Feb 2004]
MMIHMM: Maximum Mutual Information Hidden Markov Models
White Paper Finally we illustrate the superiority of our approach in different classification tasks by comparing the classification performance of our proposed Maximum Mutual Information HMMs (MMIHMMs) with standard... [10 Apr 2008]
Lattice-Reduction-Aided Receivers for MIMO-OFDM in Spatial Multiplexing Systems
White Paper The performance of maximum likelihood detector in MIMO-OFDM system is optimal, however, its complexity, especially with higher order constellation is prohibitive. This paper proposes a class of... [26 Jul 2005]
High Performance Viterbi Decoder for OFDM Systems
White Paper It is well-known that, for systems that deploy conventional convolutional codes, a Viterbi decoder is the best solution in maximum likelihood sense to decode an information sequence. Typically, a Viterbi... [11 Apr 2007]
Transmit-Antennae Space-Time Block Coding for Generalized OFDM in the Presence of Unknown Multipath
White Paper Transmit antenna diversity has been exploited recently to develop high-performance space-time coders and simple maximum-likelihood decoders for transmissions over flat fading channels. Relying on block... [29 Oct 2004]
Blind Multiuser Detection in Uplink CDMA With Multipath Fading: A Sequential EM Approach
White Paper Since maximum-likelihood sequence estimation is too complex to perform, multiuser receivers are proposed based on the sequential expectation maximization (EM) algorithm. This paper considers joint... [29 Jul 2004]
Code Acquisition in Transmit Diversity DS-CDMA Systems
White Paper One is a training-based single-user maximum-likelihood (SUML) estimator, which can achieve code acquisition very fast at low computational complexity. In this paper, two code acquisition schemes are... [26 Jul 2005]
Reduced QRD-M Detector in MIMO-OFDM Systems With Partial and Embedded Sorting
White Paper The QRD-M algorithm first decomposes the MIMO channel matrix into upper triangular matrix and applies a limited tree search to approximate the maximum-likelihood detector. This paper presents a reduced... [13 Apr 2007]
Iterative Receivers for Space-Time Block Coded OFDM Systems in Dispersive Fading Channels
First, the paper proposes a maximum-likelihood (ML) receiver for STBC-OFDM systems based on the expectation-maximization (EM) algorithm. This paper considers the design of iterative receivers for... [30 Mar 2005]
Multiresolution Decoding Algorithm for Walsh-Hadamard Linear Precoded OFDM
White Paper For a target BER, the algorithm refines the accuracy (called here resolution) of the estimated symbols based on a tree-like structured algorithm and can achieve near Maximum Likelihood performance with... [02 Nov 2004]
Adaptive OFDM Synchronization Algorithms Based on Discrete Stochastic Approximation
The paper shows that the discrete stochastic approximation algorithms can be effectively used to achieve a significant reduction in computational complexity compared to brute force maximum-likelihood... [30 Mar 2005]
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