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Dual use of power lines for data communications in a system-on-chip environment

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3 Author(s)
Woo Cheol Chung ; Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., USA ; Dong Sam Ha ; Hyung-Jin Lee

We propose to use power pins to carry data signals while simultaneously delivering power. A direct superposition of a data signal on a power pin would fail due to the inherent high noise level on power lines and this precludes the possibility for multiple data channels. To address the problem, we suggest adoption of the UWB (ultra wideband) and direct sequence-code division multiple access (DS-CDMA) communication technologies. Because of the wide bandwidth, a UWB signal can reduce its average power level practically to the noise level. DS-CDMA further mitigates the noise and allows multiple data channels to share interconnected power lines. We studied the feasibility of the proposed scheme through SPICE simulations and present the simulation results.

Published in:

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Date of Conference:

23-26 May 2005

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