K. Eshima, Y. Hase, S. Oomori, F. Takahashi, R. Kohno
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Much attention has been paid to a new form of spread spectrum technique called the ultra wideband impulse radio (UWB-IR) system for future high speed wireless communication services. We present an M-ary scheme that is effective to reduce interference of UWB systems to existing radio systems. The paper presents both theoretic analysis and BER-based computer simulation evaluations of the proposed scheme and shows that the proposed system can overperform the conventional UWB system.
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