Title :
Demodulation for wireless ATM network using modified SOM network
Author :
Li, Jiang ; Liang, Qilian ; Manry, Michael T.
Author_Institution :
Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA
Abstract :
We study the demodulation problem in time division multiple access (TDMA) wireless asynchronous transfer mode (ATM) networks, where Rician flat fading channels are considered. A linear interpolation with decision feedback combined with a modified version of the self-organizing-map (LIDF-SOM) demodulator is proposed for such a system. We obtain the training sequence by exploiting medium access control (MAC) and data link control (DLC) protocols such that a semi-blind adaptive demodulator is implemented. Simulation results show that LIDF-SOM obtains 0.4-1.0 dB gain over Rician fading channels as compared to LIDF alone.
Keywords :
Rician channels; adaptive systems; asynchronous transfer mode; demodulation; radio networks; self-organising feature maps; telecommunication computing; time division multiple access; MAC protocols; Rician channels; Rician fading channels; Rician flat fading channels; TDMA; data link control protocols; decision feedback; demodulation; linear interpolation; medium access control protocols; modified SOM network; self-organizing-map; semi-blind adaptive demodulator; time division multiple access; training sequence; wireless ATM network; Access protocols; Asynchronous transfer mode; Demodulation; Fading; Feedback; Interpolation; Media Access Protocol; Programmable control; Rician channels; Time division multiple access;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1327199
