Parameter Estimation for Multiple Chirp Signals Based on Single Channel Nyquist Folding Receiver

Qiu, Zhaoyang; Zhang, Qi; Sun, Minhong; Zhu, Jun

doi:10.1587/transfun.2019eal2097

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…The derivation from (10) to (11) is given as follows. The spectrum of the NYFR output can be written as…”

Section: Discussionmentioning

confidence: 99%

“…Then, the complex NYFR input is assumed as x 0 (t) = Ae j2π f c t+ jϕ 0 , where t ∈ [0, T ), T is the signal duration, A is the signal amplitude, ϕ 0 is the signal initial phase and f c is the carrier frequency. To simplify the analysis, the signal initial phase is assumed as 0 [10], [11]. Thus, the spectrum of the output signal is [3]…”

Section: Nyfr Architecture and Signal Modelmentioning

confidence: 99%

“…Since the NYFR output signal power is P sS = A 2 in the simplified situation, the output signal power in (11) can be rewritten as…”

Section: Aperture Impact On the Nyfr Output Snrmentioning

confidence: 99%

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Analysis of Sampling Aperture Impact on Nyquist Folding Receiver Output

SUN

Wang

Qiu

et al. 2022

IEICE Trans. Fundamentals

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The Nyquist folding receiver (NYFR) is a novel analogto-information architecture, which can achieve wideband receiving with a small amount of system resource. The NYFR uses a radio frequency (RF) non-uniform sampling to realize wideband receiving, and the practical RF non-uniform sample pulse train usually contains an aperture. Therefore, it is necessary to investigate the aperture impact on the NYFR output. In this letter, based on the NYFR output signal to noise ratio (SNR), the aperture impact on the NYFR is analyzed. Focusing on the aperture impact, the corresponding NYFR output signal power and noise power are given firstly. Then, the relation between the aperture and the output SNR is analyzed. In addition, the output SNR distribution containing the aperture is investigated. Finally, combing with a parameter estimation method, several simulations are conducted to prove the theoretical aperture impact.

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“…The derivation from (10) to (11) is given as follows. The spectrum of the NYFR output can be written as…”

Section: Discussionmentioning

confidence: 99%

Section: Nyfr Architecture and Signal Modelmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Sampling Aperture Impact on Nyquist Folding Receiver Output

SUN

Wang

Qiu

et al. 2022

IEICE Trans. Fundamentals

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Radio Techniques Incorporating Sparse Modeling

Nishimura

Ogawa

Ohgane

et al. 2021

IEICE Trans. Fundamentals

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Sparse modeling is one of the most active research areas in engineering and science. The technique provides solutions from far fewer samples exploiting sparsity, that is, the majority of the data are zero. This paper reviews sparse modeling in radio techniques. The first half of this paper introduces direction-of-arrival (DOA) estimation from signals received by multiple antennas. The estimation is carried out using compressed sensing, an effective tool for the sparse modeling, which produces solutions to an underdetermined linear system with a sparse regularization term. The DOA estimation performance is compared among three compressed sensing algorithms. The second half reviews channel state information (CSI) acquisitions in multiple-input multiple-output (MIMO) systems. In time-varying environments, CSI estimated with pilot symbols may be outdated at the actual transmission time. We describe CSI prediction based on sparse DOA estimation, and show excellent precoding performance when using the CSI prediction. The other topic in the second half is sparse Bayesian learning (SBL)-based channel estimation. A base station (BS) has many antennas in a massive MIMO system. A major obstacle for using the massive MIMO system in frequency-division duplex mode is an overhead for downlink CSI acquisition because we need to send many pilot symbols from the BS and to get the feedback from user equipment. An SBL-based channel estimation method can mitigate this issue. In this paper, we describe the outline of the method, and show that the technique can reduce the downlink pilot symbols.

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Parameter Estimation for Multiple Chirp Signals Based on Single Channel Nyquist Folding Receiver

Cited by 2 publications

References 10 publications

Analysis of Sampling Aperture Impact on Nyquist Folding Receiver Output

Analysis of Sampling Aperture Impact on Nyquist Folding Receiver Output

Radio Techniques Incorporating Sparse Modeling

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