Cognitive Transmissions with Multiple Relays in Cognitive Radio Networks

A low complexity DC-compensated weighted two-bit transform (2BT) based multiple candidate motion estimation algorithm is proposed in this paper. By exploiting almost the identical operations in two different matching error criteria and incorporating the DC-term into them, we can efficiently determine two best motion vectors according to the respective matching criteria and can enhance the overall motion estimation accuracy. Experimental results show that the proposed algorithm achieves peak-to-peak signal-to-noise ratio (PSNR) gains about 0.83dB on average compared with the conventional 2BT-based motion estimation with negligible complexity increase.

[1]  Yonghong Zeng,et al.  Sensing-Throughput Tradeoff for Cognitive Radio Networks , 2008, IEEE Transactions on Wireless Communications.

[2]  Geoffrey Ye Li,et al.  Soft Combination and Detection for Cooperative Spectrum Sensing in Cognitive Radio Networks , 2008, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[3]  Itu-T and Iso Iec Jtc.  Advanced video coding for generic audiovisual services , 2010 .

[4]  A. Ghasemi,et al.  Collaborative spectrum sensing for opportunistic access in fading environments , 2005, First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005..

[5]  S. Erturk.  Multiplication-Free One-Bit Transform for Low-Complexity Block-Based Motion Estimation , 2007, IEEE Signal Processing Letters.

[6]  Konstantinos Konstantinides,et al.  Low-complexity block-based motion estimation via one-bit transforms , 1997, IEEE Trans. Circuits Syst. Video Technol..

[7]  Sarp Erturk,et al.  Block motion estimation using adaptive modified two-bit transform , 2007 .

[8]  Ezzatollah Salari,et al.  Successive elimination algorithm for motion estimation , 1995, IEEE Trans. Image Process..

[9]  Raviraj S. Adve,et al.  Selection cooperation in multi-source cooperative networks , 2008, IEEE Transactions on Wireless Communications.

[10]  Jechang Jeong,et al.  Successive elimination algorithm for two-bit transform-based motion estimation , 2010, IEICE Electron. Express.

[11]  Vladimir I. Kostylev,et al.  Energy detection of a signal with random amplitude , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[12]  Linda Doyle,et al.  Cyclostationary Signatures in Practical Cognitive Radio Applications , 2008, IEEE Journal on Selected Areas in Communications.

[13]  Georgios B. Giannakis,et al.  A Wavelet Approach to Wideband Spectrum Sensing for Cognitive Radios , 2006, 2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications.

[14]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[15]  Aria Nosratinia,et al.  Outage analysis of coded cooperation , 2006, IEEE Transactions on Information Theory.

[16]  Gerhard Fettweis,et al.  Relay-based deployment concepts for wireless and mobile broadband radio , 2004, IEEE Communications Magazine.

[17]  Wei-Ping Zhu,et al.  An opportunistic cooperation scheme and its BER analysis , 2009, IEEE Transactions on Wireless Communications.

[18]  Jeffrey H. Reed,et al.  A new approach to signal classification using spectral correlation and neural networks , 2005, First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005..

[19]  Geoffrey Ye Li,et al.  Cooperative Spectrum Sensing in Cognitive Radio, Part I: Two User Networks , 2007, IEEE Transactions on Wireless Communications.

[20]  Biing-Hwang Juang,et al.  Signal Processing in Cognitive Radio , 2009, Proceedings of the IEEE.

[21]  Aggelos Bletsas,et al.  A simple Cooperative diversity method based on network path selection , 2005, IEEE Journal on Selected Areas in Communications.

[22]  Jechang Jeong,et al.  Enhanced two-bit transform based motion estimation via extension of matching criterion , 2010, IEEE Transactions on Consumer Electronics.

[23]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[24]  Joseph Mitola,et al.  Cognitive radio: making software radios more personal , 1999, IEEE Wirel. Commun..

[25]  Helmut Bölcskei,et al.  An overview of MIMO communications - a key to gigabit wireless , 2004, Proceedings of the IEEE.

[26]  Sarp Erturk,et al.  Two-bit transform for binary block motion estimation , 2005 .

[27]  Chi-Ying Tsui,et al.  Low-power VLSI design for motion estimation using adaptive pixel truncation , 2000, IEEE Trans. Circuits Syst. Video Technol..

[28]  Yu-Dong Yao,et al.  Outage Probability Analysis of Cognitive Transmissions: Impact of Spectrum Sensing Overhead , 2010, IEEE Transactions on Wireless Communications.

[29]  Salama Ikki,et al.  Performance of Multiple-Relay Cooperative Diversity Systems with Best Relay Selection over Rayleigh Fading Channels , 2008, EURASIP J. Adv. Signal Process..

[30]  Baoyu Zheng,et al.  Outage analysis of opportunistic cooperation over rayleigh fading channels , 2009, IEEE Transactions on Wireless Communications.