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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



Adaptive Beamforming for Antenna Arrays in Cellular Systems Based on a Duality Between Uplink and Downlink Channels

This paper presents a beamforming algorithm for antenna arrays attending to both power and signal-tointerference-plus-noise (SNIR) ratio constraints. The pr...

SBrT 2010


Performance comparison between single-carrier and OFDM using the cutoff rate

This article aims to establish a performance comparison between the Single Carrier with Cyclic Prefix (SCCP) and the Orthogonal Frequency Division Multiple...

SBrT 2010


Optimized Blind Algorithms for Widely Linear Beamforming

The use of array beamforming in modern wireless communication systems has been increasingly investigated, due to their potential in rejecting interference ...

SBrT 2010


Reduced Complexity Viterbi Decoding Based on the M-Algorithm and the Minimal

In this paper we propose sub-optimum, reduced complexity decoding algorithms for convolutional codes. The algorithms are based on the minimal trellis repre...

SBrT 2010


Evaluation of the Effects of the Co-Channel Interference on the Bit Error Rate of Cellular Systems for BPSK Modulation

A performance analysis in terms of the bit error rate for digital systems with co-channel interference is done. In order to evaluate the effects of the int...

SBrT 2010