A well–known receiver strategy for a linearly modulated signal transmitted over a frequency–selective channel is channel equalization. Recently it was proposed to employ a minimum mean–squared error (MMSE) channel equalizer for the downlink of CDMA. In this paper, we introduce a new receiver concept using MMSE channel equalization as a first stage and MMSE decision–feedback equalization (DFE) u...

This paper presents a simplified derivation of the structure and performance of the optimum diversity comhiner/decision feedback equalizers, previously derived by Balahan and Salz. O u r analysis is based on fundamental results of linear prediction and estimation theory. New closed-form expressions that benchmark the performance of these receivers in a two-hem slowly Rayleigh fading channel hav...

In this work we assess performance of multiple-input multiple-output (MIMO) antenna systems with space-time processing over a frequency-selective channel in presence of time-dispersive co-channel interference. We evaluate the performance of the conventional MIMO-decision-feedback equalizer (MIMO-DFE) receiver and also propose a low complexity receiver, based on the decoupled interference cancel...

Abstract In next generation mobile communication, high speed and high quality data transmission is required. However, in a DS-CDMA system, when small spreading factor SF is used to achieve high speed data transmissions in a frequency-selective fading channel, an error floor is produced due to large inter-path interference (IPI). The authors have proposed a decision feedback chip-level maximum l...

In this paper, an equalization algorithm based on soft–decision feedback, designed for transmission with square QAM constellations is introduced. The algorithm employs a minimum mean–squared error (MMSE) filter in each iteration in order to refine the data estimates. The rule for generating soft decisions is adapted continuously to the current state of the algorithm. It is shown that the algori...

In this paper, we explore spatial vs. multi-user diversity tradeoffs in terms of outage capacity for a non-homogeneous cellular system with selective feedback. More precisely, we analytically derive an upper bound of the outage capacity of both a SISO and an OSTBC transmission scheme and, further, analyze some interesting trade-offs concerning the impact of terminal count and bandwidth restrict...

Purpose: Considering the importance of aesthetic education in students, the purpose of this study was the aesthetic education of elementary school students: analysis of dimensions and components with a qualitative approach. Methodology: This research in terms of purpose was applied and in terms of implementation method was qualitative from type of exploratory inductive. The research population...