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Sociedade Brasileira de Telecomunicações

2012 - XXX Simpósio Brasileiro de Telecomunicações



Otimização de rede de sensores sem fio através de algoritmo de codificação de rede

A wireless sensor network is a kind of ad hoc network that can be used to monitor a variety of environmental characteristics in various fields with, for in...

SBrT 2012


Cooperative Transmission Scheme with Two Relay Stations and Phase Feedback Channels

In this paper, we propose a new transmission scheme with two relay stations and phase feedback channels between the relays and the destination node. The pr...

SBrT 2012


A Full-Diversity Scheme for Four Transmit Antennas and Quantized Feedback Channel

In this paper we propose a spatial diversity scheme for four transmit antennas and quantized feedback channel systems. We present a preprocessor design tha...

SBrT 2012


Outage Analysis of Cooperative OFDM Systems with Nonlinear Amplifiers and Relay Selection

Cooperative communications have emerged as a promising solution for wireless networks. In particular, currently there is a growing interest in amplify-and-...

SBrT 2012


Performance Evaluation of Spatial Filtering for Relay-Assisted MIMO Communication Systems

We consider a dual-hop single-relayed Multiple Input Multiple Output (MIMO) wireless communication system containing a relay that enables a link among sour...

SBrT 2012