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Chirp-Convolved Data Transmission
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DOI：10.1109/LCOMM.2020.3042850.png)
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Abstract
En 中文
We propose a multicarrier chirp waveform, which can be generated by a circular convolution between data modulation symbols and a transmit filter, and show that it can equivalently be represented as discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) with frequency domain chirp filter. The chirp is defined by a complex exponential function where the phase follows a second-degree polynomial and its coefficients can be chosen to maximize the performance on a fading channel and to generate sets of orthogonal signals. The results show that the waveform outperforms OFDM and DFT-s-OFDM in terms of bit error rate (BER) and block error rate (BLER) on a time-frequency selective channel.
Keywords:
Chirp
OFDM
Discrete Fourier transforms
Receivers
Fading channels
Modulation
Code division multiplexing
Chirp
DFT-s-OFDM
OFDM
channel fading
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