Improving the Performance in Delta Sigma Modulator Transmitter
Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
COMCONF08_065
تاریخ نمایه سازی: 8 آبان 1400
Abstract:
One of the major drawbacks in using delta sigma modulator (DSM)-transmitters is a large amount ofquantization noise at the output of DSM which results on low efficiency for transmitter. In this paper the efficiency ofDSM-transmitter is improved by reducing quantization noise from the DSM output signal while the signal to noise anddistortion ratio (SNDR) is maintained. Simulation results show that by this technique and for ۱.۹۲ MHz long termevolution (LTE) input signal with oversampling ratio (OSR) of ۱۶, the coding efficiency (CE) of DSM is improved from۹.۷% to ۲۳% while the SNDR is around ۴۱dB.
Keywords:
Switch mode power amplifier (SMPA) , Delta sigma modulator (DSM)
Authors
Nasser Erfani Majd
Department of Electrical Engineering, Shohadaye Hoveizeh Campus of Technology, Shahid Chamran University ofAhvaz, Dasht-e Azadegan, Khuzestan, Iran