A Study of Different Angles for Higher Order Rotation Spreading Matrix for BSOFDM in UWB Channels

This paper presents a study into different angles for higher order rotation spreading matrix developed for BSOFDM. It was shown previously that for block size M = 2 that the angle a = pi/3 achieved the best result in terms of BER in UWB channels. It was discovered that this was no longer the case when the higher order rotation spreading matrix was used for larger M sized blocks and that other angles produced better results which proves that the rotation spreading matrix advantage over existing spreading matrices such as the Hadamard is its flexibility to be adapted to different communication systems.

[1]  Xiaojing Huang,et al.  Higher order rotation spreading matrix for block spread OFDM , 2007, 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications.

[2]  Xiaojing Huang,et al.  Exploiting Time Diversity to Improve Block Spread OFDM in a Multipath Environment , 2006, 2006 2nd International Conference on Information & Communication Technologies.

[3]  Michael L. McCloud.  Analysis and design of short block OFDM spreading matrices for use on multipath fading channels , 2005, IEEE Transactions on Communications.

[4]  Xiaojing Huang,et al.  A Study of Different Angles for the New Spread Matrix for BSOFDM in UWB Channels , 2007, 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07).

[5]  Xiaojing Huang,et al.  A New Spreading Matrix for Block Spread OFDM , 2006, 2006 10th IEEE Singapore International Conference on Communication Systems.

[6]  D. Lowe.  Real-time FPGA realization of an UWB transceiver physical layer , 2005 .

[7]  M.L. McCloud,et al.  Coded block OFDM for the frequency selective fading channel , 2004, Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004..

[8]  Michael L. McCloud.  Optimal binary spreading for block OFDM on multipath fading channels , 2004, 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733).