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Based on the newly proposed cyclic shift orthogonal keying (CSOK) scheme, this paper presents the top-down design and realization of a dual-mode single-carrier/multi-carrier (SC/MC) spread spectrum (SS) system, including a new DQPSK-HCSOK hybrid modulation scheme and associated differential receiver. Packet and preamble formats are also designed for packet detection, CFO compensation, and channel...
A bandwidth and power efficient multi-code multicarrier spread spectrum (MCSS) system is proposed in terms of a new cyclic shift orthogonal keying (CSOK) scheme. The system can operate in either the Hybrid CSOK (HCSOK) mode which combines PSK/QAM with CSOK, or the Quadrature CSOK (QCSOK) mode which provides higher data rate. Under dispersive channel, efficient maximum likelihood receivers are derived...
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