Channel estimation and symbol demodulation of the transform domain communication system

The transform domain communication system (TDCS) is one spectrum agile transceiver technology in the cognitive radio (CR) contexts. It gives an effective and available way to resolve current spectrum resource scarcity. This paper briefly introduces the basic theory of the TDCS transceiver. The primary goal of this paper is to give a detailed description of the channel estimation (CE) in TDCS receiver and its applications in receiving symbol demodulation, where the CE-based demodulation algorithm is proposed. Computer simulation results verify that the CE of TDCS is available and realizable, and the bit error ratio (BER) performance of CE-based demodulation algorithm is better than the one of traditional TDCS RAKE receiver algorithm in the Additive White Gaussian Noise (AWGN) and multi-path fading channels.

[1]  M. Reuter,et al.  Cyclic code shift keying: a low probability of intercept communication technique , 2003 .

[2]  Michael A. Temple,et al.  Cognitive radio - an adaptive waveform with spectral sharing capability , 2005, IEEE Wireless Communications and Networking Conference, 2005.

[3]  Michael A. Temple,et al.  TDCS, OFDM, and MC-CDMA: a brief tutorial , 2005, IEEE Communications Magazine.

[4]  Michael A. Temple,et al.  Initial acquisition performance of a transform domain communication system: modeling and simulation results , 2000, MILCOM 2000 Proceedings. 21st Century Military Communications. Architectures and Technologies for Information Superiority (Cat. No.00CH37155).

[5]  P. J. Swackhammer,et al.  Performance simulation of a transform domain communication system for multiple access applications , 1999, MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341).

[6]  Richard A. Raines,et al.  Transform domain communications: interference avoidance and acquisition capabilities , 2000, Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093).