High Order Modulation Scheme for Ir-uwb System via Orthogonal Wavelet Pulses
نویسندگان
چکیده
This paper presents a high order modulation scheme for IR-UWB systems. For 8-ary modulation, we combine pulse position modulation (PPM), pulse amplitude modulation (PAM), and pulse shape modulation (PSM), which are well-established schemes for IR-UWB. The transmitter and receiver architectures of the proposed system, we call PPASM, are provided. In addition, we propose the use of complex Shannon wavelet waveforms not only to satisfy the FCC spectral mask but also to maintain the orthogonality between two pulses for PSM. The simulation results of the proposed system illustrate that PPASM has the reasonable error performance.
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تاریخ انتشار 2006