Nullspace-Based Secondary Joint Transceiver Scheme for Cognitive Radio MIMO Networks Using Second-Order Statistics
Author:
- H. YiHYH. Yi
- 1 May 2010
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1-5
Abstract
In this paper, we propose a practical nullspace-based secondary joint transceiver scheme for the coexistence of a secondary system and a primary system in cognitive radio MIMO (CR-MIMO) networks using second-order statistics. First, we propose a secondary transmission frame structure, and briefly describe the periodical nullspace sensing procedure for both the secondary transmitter (ST) and secondary receiver (SR). Then, we formulate nullspace-based secondary joint transceiver scheme by utilizing the nullspace at the ST as the secondary transmit precoding and the nullspace at the SR as the secondary receive beamforming from both theoretical and practical perspective. Furthermore, we focus on analyzing the effect of nullspace estimation errors on the performance of the primary system and the secondary system. Finally, simulations are presented to demonstrate the effectiveness of the proposed secondary joint transceiver scheme along with the theoretical analysis.Keywords
This publication has 9 references indexed in Scilit:
- Optimal design of learning based MIMO cognitive radio systems2009
- Null Space-Based Precoding Scheme for Secondary Transmission in a Cognitive Radio MIMO System Using Second-Order Statistics2009
- Cognitive beamforming made practical: Effective interference channel and learning-throughput tradeoff2009
- A Cognitive Beamforming Scheme for Coexistence of Incumbent and Cognitive Radios2009
- A pre-whitening scheme in a MIMO-based spectrum-sharing environmentIEEE Communications Letters, 2008
- Exploiting Multi-Antennas for Opportunistic Spectrum Sharing in Cognitive Radio NetworksIEEE Journal of Selected Topics in Signal Processing, 2008
- Robust subspace blind channel estimation for cyclic prefixed MIMO ODFM systems: algorithm, identifiability and performance analysisIEEE Journal on Selected Areas in Communications, 2008
- Cognitive radio: brain-empowered wireless communicationsIEEE Journal on Selected Areas in Communications, 2005
- Detection of signals by information theoretic criteriaIEEE Transactions on Acoustics, Speech, and Signal Processing, 1985