A Code-Division Multiplexing Technique for Efficient Data Transmission in VLSI Systems

Yasushi YUMINAKA  Kazuhiko ITOH  Yoshisato SASAKI  Takafumi AOKI  Tatsuo HIGUCHI  

IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.9   pp.1669-1677
Publication Date: 1999/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Integrated Electronics and New System Paradigms)
Category: Non-Binary Architectures
VLSI systems,  code division multiplexing,  m-sequence,  new paradigm computing,  spread-spectrum image processing,  

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This paper proposes applications of a code-division multiplexing technique to VLSI systems free from interconnection problems. We employ a pseudo-random orthogonal m-sequence carrier as a multiplexable information carrier to achieve efficient data transmission. Using orthogonal property of m-sequences, we can multiplex several computational activities into a single circuit, and execute in parallel using multiplexed data transmission with reduced interconnection. Also, randomness of m-sequences offers the high tolerance to interference (jamming), and suppression of dynamic range of signals while maintaining a sufficient signal-to-noise ratio (SNR). We demonstrate application examples of multiplex computing circuits, neural networks, and spread-spectrum image processing to show the advantages.