Title :
Orthogonal on-off BPSK: a convenient signaling scheme for near-far resistant detection in DS/CDMA
Author :
Zheng, Fu-Chun ; Barton, Stephen K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Victoria Univ. of Technol., Melbourne, Vic., Australia
fDate :
8/1/1998 12:00:00 AM
Abstract :
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
Keywords :
code division multiple access; correlation theory; phase shift keying; receivers; signal detection; spread spectrum communication; telecommunication signalling; D-BPSK sequences; DS/CDMA; O3 strategy; O3BPSK; asynchronous direct-sequence code-division multiple-access; data rate; differentially encoded BPSK; near-far resistant detection; on-off signaling; one-shot linear decorrelating detector; orthogonal on-off BPSK; orthogonal structure; received signals; receiver; signaling scheme; transmission rate; uplink; AWGN; Application software; Binary phase shift keying; Channel coding; Computer simulation; Decorrelation; Delay; Detectors; Multiaccess communication; Noise measurement;
Journal_Title :
Vehicular Technology, IEEE Transactions on
