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Spectrally efficient modulation and spreading scheme for CDMA systems

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2 Author(s)
JaeRyong Shim ; Radio Transmission Technol. Team, ETRI-Radio & Broadcasting Technol. Lab., Taejon ; SeungChan Bang

A novel modulation and spreading scheme is proposed based on the orthogonal complex rotator that outperforms the traditional PN (pseudo noise) complex QPSK method in terms of adjacent channel power. This scheme is important for hand-held terminals because it increases battery life and capacity due to reduced interference. A mathematical analysis and adjacent channel power simulation results are provided and discussed

Published in:

Electronics Letters  (Volume:34 ,  Issue: 23 )