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Transmit pre-emphasis for high-speed time-division-multiplexed serial-link transceiver

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3 Author(s)
Stojanovic, V. ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Ginis, G. ; Horowitz, M.A.

Time division multiplexing (TDM) must be employed in multi-Gb/s transceivers in order to overcome onchip clock frequency limitations. This paper describes a transmit pre-emphasis filter for a multi-level transceiver making use of TDM. The possible applications of such a transceiver include serial links and chip-to-chip communication. The requirement of very low probability of error in the absence of coding, and the need for an adaptive solution impose a peak transmit power constraint. The TDM system is mapped to a multiple-input-multiple-output (MIMO) system, and the noise sources are analyzed. The design of the pre-emphasis filter is shown to be a non-convex optimization problem, whose optimal solution is very difficult to obtain. Still, sub-optimal solutions are derived in closed form and adaptive implementations are described. Simulation results using parameters obtained from an experimental testbed indicate that these sub-optimal solutions actually achieve very good performance.

Published in:

Communications, 2002. ICC 2002. IEEE International Conference on  (Volume:3 )

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