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Sociedade Brasileira de Telecomunicações

2010 - VII International Telecommunications Symposium



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


Geographic Routing in IEEE 802.11 Wireless Networks with Channel Width Adaptation

n this paper, we propose two geographic routing metrics applied to wireless mesh networks that consider the use of channel width adaptation. The proposed m...

SBrT 2010


Evaluation of the Effects of Co-Channel Interference on the Bit Error Rate for QPSK and M-QAM Modulations

In this paper, a performance analysis for QPSK, 16- QAM and 64-QAM, modulations in the presence of co-channel interference is made. At first, an expression...

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


A Linearly Constrained IQRD-RLS Algorithm for Blind Multiuser Detection in CDMA Systems

In this paper we propose an inverse QR decomposition based recursive least squares algorithm (IQRD-RLS) for the linearly constrained minimum variance (LCMV)...

SBrT 2010