MMSE
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Recent papers in MMSE
During the signal identification process, massive multiple-input multiple-output (MIMO) systems must manage a high quantity of matrix inversion operations. To prevent exact matrix inversion in huge MIMO systems, several strategies have... more
This paper compares the performance of various channel estimation techniques for OFDM systems over quasi-static channels using MATLab. It compares the performance of five channel estimation techniques, these are: decision directed (DD),... more
Fifth generation cellular networks are the key systems which are being deployed in the near future. The enabling technology, Multiple-In Multiple-Out (MIMO) wireless technology makes use of varied number of antennas at the transmitter and... more
Background: Executive functioning (EF) coordinates cognitive functioning (CF). According to some studies, EF declines with age. CF is relatively stable until 50-60 years of age, but it declines after that. Interaction between executive... more
This paper presents the bit error rate (BER) performance of the low density parity check (LDPC) based space-time trellis coded 2×2 multiple-input multiple-output orthogonal frequency-division multiplexing(STTC-MIMO-OFDM) system on text... more
In this paper, we propose a new method of channel estimation for asynchronous additive white Gaussian noise channels in satellite communications. This method is based on signals correlation and multiuser interference cancellation which... more
Ai m : The ai m of this study was standardization and validation of the Mini-Mental State Examination (MMSE) in the general Croatian aging population. Methods: Three-hundred and forty-four participants underwent the MMSE test, 217... more
In this work we consider the problem of recovering shaped offset quadrature-phase shift keying (SOQPSK)-TG modulated data, which has been transmitted over an unknown channel, using the iNET data packet structure. Previous work has shown... more
Contexto: O envelhecimento caracteriza-se frequentemente por alterações cognitivas que, por vezes, excedem o esperado para o envelhecimento normal. Estas alterações que não reúnem critérios de demência constituem o Défice Cognitivo sem... more
Background: The Mini-mental State Examination (MMSE) and the Alzheimer’s Disease Assessment Scale- cognitive subscale (ADAS -Cog) are two of the most widely used instruments globally in the screening of dementia and in testing treatment... more
In this paper, we have evaluated various methods of time-frequency-selective fading channels estimation in OFDM system and some of them improved under time varying conditions. So, these different techniques will be studied through... more
Impulsivity, conceptualized as impulsive personality trait, poor inhibitory control and enhanced reward sensitivity , has been strongly linked to obesity. In particular, a disequilibrium between cognitive control and reward sensitivity... more
The paper describes how to improve channel estimation in Single Carrier Frequency Division Multiple Access (SC-FDMA) system, using a Hybrid Artificial Neural Networks (HANN). The 3 rd Generation Partnership Project (3GPP) standards for... more
Coordinated multi-point transmission and reception (CoMP) is introduced in LTE-A to mitigate co-channe l interference and improve the cell-edge user experie nce. In this paper we propose a joint transmission scheme for LTE-CoMP and we... more
In this paper, we propose a study of performance of the channel estimation using LS, MMSE, LMMSE and Lr-LMMSE algorithms in OFDM (Orthogonal Frequency Division Multiplexing) system which, as known suffers from the time variation of the... more
The paper deals with the development of two new schemes of space-time MMSE receivers implemented for the forward link of a WCDMA multi-satellite system and their performance evaluation under non-ideal conditions. They are compared with... more
The consistent demand for higher data rates and need to send giant volumes of data while not compromising the quality of communication has led the development of a new generations of wireless systems. But range and data rate limitations... more
The turbo detection of turbo coded symbols over correlated Rayleigh flat fading channels generated according to Jakes' model is considered in this paper. We propose a method to estimate the channel signal-to-noise ratio (SNR) and the... more
This paper deals with the performance analysis of both linear (LE) and widely linear (WLE) equalization processes studied in the symbol spaced mode (SSE) as well as in the fractionally spaced one (FSE). This analysis is evaluated - using... more
This paper analyzes the impact of fading correlation, cross polarization coupling and channel degeneracy alias keyhole condition on the error performance of V-BLAST MIMO system that employs detector algorithms like ZF, MMSE and ML with... more
Abstract This paper deals with the performance analysis of channel estimation methods for LTE downlink system over time varying mobile environments. The analysis of channel estimation in the presence of interference is also done. Least... more
Objective: To determine whether the Mini-Mental State Examination (MMSE) could be used to predict short-term impairments in memory functions during a course of Electroconvulsive Therapy (ECT). Method: Patients with severe depression... more
The sparse synthesis model for signals has become very popular in the last decade, leading to improved performance in many signal processing applica-tions. This model assumes that a signal may be described as a linear combi-nation of few... more
Background: Alzheimer's disease (AD) is the main cause of the neurodegenerative disorder, which is not detected unless the cognitive deficits are manifested. An early prediagnostic specific biomarker preferably detectable in plasma and... more
Main objectives of this paper is to design the PSK and QAM system for Symbol Error Rate (SER) performance analysis and to estimate the channels in OFDM. PSK & QAM syatems are designed for 64 Sbcarriers. In this paper we will compare the... more
In Today’s World, the Wireless Community is in great demand of Increasing capacity and to provide high data rate services due to increase in the number of users and traffic due to a paradigm shift in the existing technology to support... more
Among all the available multiple access techniques, CDMA has the unique feature that it allows sharing of the same channel by all active users. CDMA performance is degraded up to some extent by two phenomenon i.e. Multiple-access... more
Background: Black ethnic minorities in the UK have been found to have a disproportionately higher incidence of dementia, are more likely to be rated as demented and have lower scores on the Mini Mental State Examination (MMSE) when... more
Coordinated multi-point transmission and reception (CoMP) is introduced in LTE-A to mitigate co-channe l interference and improve the cell-edge user experie nce. In this paper we propose a joint transmission scheme for LTE-CoMP and we... more
The authors examined associations between exposure to aluminum or silica from drinking water and risk of cognitive decline, dementia, and Alzheimer’s disease among elderly subjects followed for 15 years (1988–2003). They actively searched... more
For high data rate ultra wideband communication system, performance comparison of Rake, MMSE and Rake-MMSE receivers is attempted in this paper. Further a detail study on Rake-MMSE time domain equalizers is carried out taking into account... more
In recent studied we found that there are many optimization methods presented for optimal multiuser detection in SDMA-OFDM system, however each method is suffered from limitations. Hence in this paper we are presenting new method which is... more
In Today’s World, the Wireless Community is in great demand of Increasing capacity and to provide high data rate services due to increase in the number of users and traffic due to a paradigm shift in the existing technology to support... more
Interference alignment (IA) is a recently proposed transmission technique for the K-user interference channel (IFC), which is proven to achieve a sum-rate multiplexing gain of K/2 at the high interference regime. Motivated by our recent... more
This paper analyzes the impact of fading correlation, cross polarization coupling and channel degeneracy alias keyhole condition on the error performance of V-BLAST MIMO system that employs detector algorithms like ZF, MMSE and ML with... more