In this paper, we consider orthogonal space-frequency transmit diversity schemes for OFDM systems in broadband wireless channels. We propose a compensation method to prevent error floor caused by unequal subchannels in the space-frequency block coded OFDM systems for 2 and 3 transmit antennas while providing diversity gain. We will show that for 2 antennas case, the proposed compensation method...

Increased data rates and reliability are the two key factors required to support emerging multimedia applications and new communications technologies. The two techniques used in high data rate transmission are orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) scheme. The OFDM is used to mitigate the problem of inter symbol interference (ISI) and provide...

Social awareness is a process in which person understands and situation that makes the individual himself aware very well what happening will happen. Facts on ground show students at SMP Negeri 2 Enrekang have experienced decline social awareness. This why researchers offer solutions to increase students' by using SFBC counseling (solution-focused brief counseling). The use of this approach pla...

Aggressive behaviours in the society have been very alarming, including among high school students. To reduce aggressive behaviours, main effort is to increase self-control. This study aimed at describing differences between effectiveness of solution-focused brief counseling (SFBC) and Self-Control Training with Antecedent-Behavioral-Consequence (ABC) manipulation technique students’ behavior t...

In this paper we analyze Partial transmit sequences (PTS),it is one of the most attractive schemes to reduce the Peak-to-Average Power Ratio (PAPR) reduction in Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system with Space Frequency Block Coding (SFBC) is proposed. However, the Optimal PTS (OPTS) scheme requires an exhaustive searching over all combinations o...

Multi-cell joint channel estimation (JCE) is the basis for application of multi-cell cooperative processing. For weakness of the existing algorithms that power delay profile (PDP) knowledge of all multiple cells need be known or pilot sequence sets of all cells must be identical, in this paper, a pilot-aided time domain JCE algorithm is presented. And then, by using Generalized Akaike Informati...