Protocol-aided channel equalization for HF ATM networks

We investigate the problem of equalization in high frequency (HF) ATM networks. Aiming at minimizing the overhead associated with equalization, we exploit ATM protocol information for equalization. Specifically, the medium access control (MAC) protocol is exploited to provide known cell headers in a data burst. As a result, the data bursts can be converted into a block structure that is widely used in current HF modem design without inserting extra training symbols. A new algorithm is developed which utilizes blind channel estimation and a knowledge of the ATM cell header. Simulation results show that the new approach achieves a good performance without training symbols.

[1]  Ghassan Kawas Kaleh.  Channel Equalization for Block Transmission Systems , 1995, IEEE J. Sel. Areas Commun..

[2]  Reinaldo A. Valenzuela,et al.  A wireless broadband ad-hoc ATM local-area network , 1995, Wirel. Networks.

[3]  Zhao Liu,et al.  Distributed-queueing request update multiple access (DQRUMA) for wireless packet (ATM) networks , 1995, Proceedings IEEE International Conference on Communications ICC '95.

[4]  R. Binder,et al.  General purpose packet satellite networks , 1978, Proceedings of the IEEE.

[5]  A. Agarwal,et al.  High quality ATM operation over military and commercial satellites , 1997, MILCOM 97 MILCOM 97 Proceedings.

[6]  Cesar A. Johnston,et al.  Design and performance of radio access protocols in WATMnet, a prototype wireless ATM network , 1997, Proceedings of ICUPC 97 - 6th International Conference on Universal Personal Communications.

[7]  Lang Tong,et al.  Connections between the least-squares and the subspace approaches to blind channel estimation , 1996, IEEE Trans. Signal Process..

[8]  Frédéric Bauchot.  MASCARA, a MAC protocol for wireless ATM , 1996 .

[9]  Dipankar Raychaudhuri,et al.  WATMnet: A Prototype Wireless ATM System for Multimedia Personal Communication , 1997, IEEE J. Sel. Areas Commun..

[10]  Cesar A. Johnston,et al.  Design and performance of radio access protocols in WATMnet, a prototype wireless ATM network , 1997 .

[11]  D. Petras.  Medium access control protocol for wireless, transparent ATM access , 1995, IEEE Wireless Communication System Symposium.

[12]  Boon Chong Ng,et al.  A structured channel estimator for maximum-likelihood sequence detection , 1997, IEEE Communications Letters.

[13]  Lang Tong,et al.  Blind channel estimation using the second-order statistics: algorithms , 1997, IEEE Trans. Signal Process..

[14]  T. Kailath,et al.  A least-squares approach to blind channel identification , 1995, IEEE Trans. Signal Process..