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SPECTRALLY SHAPED GENERALIZED MULTITONE DIRECT SEQUENCE SPREAD SPECTRUM

Xiong, Wenhui

Abstract Details

2007, Doctor of Philosophy (PhD), Ohio University, Electrical Engineering & Computer Science (Engineering and Technology).

In the work of this dissertation, we propose a new modulation scheme called spectrally-shaped generalized multitone direct-sequence spread spectrum (SSG-MT-DS-SS) which is the generalized multitone/multicarrier-DS-SS (MC/MT-DS-SS) scheme. With SSG-MT-DS-SS, we can shape the spectrum of the transmitted signal with out using any kind of pulse shape filter. The spectral shaping is achieved via allowing the data rate, bit energy, processing gain, and carrier frequency of each subcarrier to be adjustable. Specifically, the parameters of each subcarrier are not constrained to be identical as conventional MC/MT-DS-SS schemes. By varying these parameters, we alter the energy distribution of the SSG-MT-DS-SS signal, and, hence, the spectrum of the transmitted signal. In this dissertation, we investigate the spectral shaping mechanism and the shaping capabilities of SSG-MT-DS-SS. We provide a general form of the power spectrum density of SSG-MT-DS-SS with arbitrary parameters on each subcarrier, and develop a numerical method to select the parameters of SSG-MT-DS-SS according to some given design requirements. We derive the general form of the bit error probability SSG-MT-DS-SS in additive white Gaussian noise channel and the dispersive channel. In addition, we also investigate the error performance of SSG-MT-DS-SS with sinusoidal chip waveforms on each subcarrier. It is shown that with the properly selected sinusoidal chip waveform and the dual sidebands combining scheme, we can improve the error performance of SSG-MT-DS-SS in the dispersive channel. The use of error correction code, e.g., Hamming code, and the peak to average power ratio of the SSG-MT-DS-SS are also investigated in this dissertation.

David Matolak (Advisor)
246 p.

Recommended Citations

Citations

  • Xiong, W. (2007). SPECTRALLY SHAPED GENERALIZED MULTITONE DIRECT SEQUENCE SPREAD SPECTRUM [Doctoral dissertation, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178116910

    APA Style (7th edition)

  • Xiong, Wenhui. SPECTRALLY SHAPED GENERALIZED MULTITONE DIRECT SEQUENCE SPREAD SPECTRUM. 2007. Ohio University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178116910.

    MLA Style (8th edition)

  • Xiong, Wenhui. "SPECTRALLY SHAPED GENERALIZED MULTITONE DIRECT SEQUENCE SPREAD SPECTRUM." Doctoral dissertation, Ohio University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178116910

    Chicago Manual of Style (17th edition)