Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2006-06-23
2010-02-09
Pham, Chi H. (Department: 2471)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C375S138000, C375S140000, C375S340000
Reexamination Certificate
active
07660230
ABSTRACT:
A novel transceiver structure is proposed to increase the achievable data rate for ultra wideband transmitted reference (UWB-TR) systems. For every Nspulse pairs during one symbol transmission, the data pulses are weighted by one of the M-ary orthogonal sequences, thus carrying additional log2M-bit information. Furthermore, by utilizing a pair of balanced matched filters before the cross correlator, the minimum separation between the reference and data pulses is significantly reduced without causing any inter-pulse interference (IPI), which in turn reduces the minimum required frame length in order to avoid the inter-frame interference (IFI). As a result, the invented TR system can achieve higher data rates than the conventional TR system, while maintaining superior bit-error-rate (BER) performance even with lower transmit power.
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Jia Tao
Kim Dong In
Kwak Kyung Sup
Brown & Michaels PC
Hom Shick
Inha-Industry Partnership Institute
Pham Chi H.
Simon Fraser University
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