2012 - XXX Simpósio Brasileiro de Telecomunicações
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...
- Samuel T. Valduga
- José C. Menezes Jr.
- Renato Machado
- Natanael R. Gomes
- Andrei P. Legg
- Coding gain
- MIMO systems
- quantized feedback
- transmit diversity
SBrT 2012
A General Approach Analysis for Amplify-and-Forward Relaying in Cooperative Diversity Networks
A general approach for analyzing the performance of dual-hop cooperative diversity networks with nonregenerative amplify-and-forward (AF) relays and employ...
- Daniel Benevides da Costa
- Amplify-and-forward relaying
- cooperative diver- sity
- dual-hop transmissions
- moment-based estimators
- perfor- mance analysis
SBrT 2012
A Kalman Filter-Based Channel Estimator for Generalized Group-Coherent Codes
In this paper we propose a semiblind algorithm for estimation of MIMO channel adapted for the use of groupcoherent codes. The performance of the proposed a...
- Murilo Bellezoni Loiola
- Renato Machado
- and Dimas Irion Alves
- Group-coherent codes
- Kalman Filter
- MIMO channel estimation.
SBrT 2012
Algorithms for Joint Optimization of Link Capacity and Regenerators Placement in Optical Networks
In this paper we compare two different approaches to tackle the regenerator placement and link capacity optimiza- tion joint problem in translucent optical...
- Renan V. B. Carvalho
- Carmelo J. A. Bastos-Filho
- Daniel A. R. Chaves
- Joaquim F. Martins-Filho
- Translucent optical networks
- Regenerator place- ment
- Link capacity optimization
SBrT 2012
Algoritmo Adaptativo DCLMS Modificado Aplicado em Sistemas de Comunicações Móveis
This paper presents a modified version of the duality constrained least-mean-square (DCLMS) algorithm, which performs both beamforming and power control in...
- Ciro André Pitz
- Rui Seara
- Constrained adaptive algorithms
- antenna array
- beamforming with power control
- mobile communication systems
SBrT 2012