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Orthogonal on-off BPSK: a convenient signaling scheme for near-far resistant detection in DS/CDMA

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2 Author(s)
Fu-Chun Zheng ; Dept. of Electr. & Electron. Eng., Victoria Univ. of Technol., Melbourne, Vic., Australia ; Barton, S.K.

This paper proposes a convenient signaling scheme-orthogonal on-off BPSK (O3BPSK)-for near-far (NF) resistant detection in asynchronous direct-sequence code-division multiple-access (DS/CDMA) systems (uplink). The temporally adjacent bits from different users in the received signals are decoupled by using the on-off signaling, and the original data rate is maintained with no increase in transmission rate by adopting an orthogonal structure. The detector at the receiver is a one-shot linear decorrelating detector, which depends upon neither hard decision nor specific channel coding. The application of O3 strategy to the differentially encoded BPSK (D-BPSK) sequences is also presented. Finally, some computer simulations are shown to confirm the theoretical analysis

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Vehicular Technology, IEEE Transactions on  (Volume:47 ,  Issue: 3 )