Zobrazeno 1 - 10
of 1 945
pro vyhledávání: '"Sigma delta modulation"'
Autor:
Lizhen Zhang, Jianhui Wu
Publikováno v:
Electronics Letters, Vol 60, Iss 19, Pp n/a-n/a (2024)
Abstract The multi‐stage noise shaping (MASH) ΣΔ ADC has a good potential to achieve high‐order noise shaping (NS) and high resolution. However, it suffers from quantization noise leakage caused by the mismatch between the analogue NS filter an
Externí odkaz:
https://doaj.org/article/1ab3655239b84f98b518ad3184f6160f
Autor:
Wai-Yiu Keung, Wing-Kin Ma
Publikováno v:
IEEE Open Journal of Signal Processing, Vol 5, Pp 520-538 (2024)
This article considers the context of multiuser massive MIMO downlink precoding with low-resolution digital-to-analog converters (DACs) at the transmitter. This subject is motivated by the consideration that it is expensive to employ high-resolution
Externí odkaz:
https://doaj.org/article/1d028c4b3a2e48f4bdfd90cce2e379cf
Publikováno v:
Electronics Letters, Vol 60, Iss 5, Pp n/a-n/a (2024)
Abstract This paper presents a prediction‐based dynamic range (DR) compensation technique in continuous‐time (CT) delta ‐sigma modulator (DSM) with digital‐domain noise coupling (DNC) structure. A digital prediction technique is proposed to a
Externí odkaz:
https://doaj.org/article/1fc9a690d1784fe0bdc343475586d8c0
Publikováno v:
Results in Engineering, Vol 21, Iss , Pp 101670- (2024)
Angle measurement is widely used in the servo positioning and speed control of electrical drives, where optical encoders are employed as sensors and coupled to microcontrollers with complex peripherals to provide effective position and speed measurem
Externí odkaz:
https://doaj.org/article/ba02078e481841cea74c95c0e161b67c
Publikováno v:
Journal of Electrical and Electronics Engineering, Vol 16, Iss 1, Pp 27-32 (2023)
This paper presents a virtual comparative study between the Analog to Digital Conversion (ADC) based Duty Cycle Modulation (DCM) and Sigma-Delta (Ʃ∆) modulation. Indeed, the Ʃ∆ modulation is the most used oversampling technique to carry out ana
Externí odkaz:
https://doaj.org/article/13dd40af50b3479f9b63092b5efa568f
Publikováno v:
Electronics Letters, Vol 59, Iss 19, Pp n/a-n/a (2023)
Abstract In this study, a digital calibration method applicable for a continuous‐time sigma‐delta analogue‐to‐digital converter is proposed using the AC injection technique. The proposed technique directly calibrates the integration accuracy
Externí odkaz:
https://doaj.org/article/11e2d042e97b455885de04f9e520d012
Autor:
Jose M. de la Rosa
Publikováno v:
Chips, Vol 2, Iss 1, Pp 44-69 (2023)
This paper reviews the state of the art on bandpass ΣΔ modulators (BP-ΣΔMs) intended to digitize radio frequency (RF) signals. A priori, this is the most direct way to implement software-defined radio (SDR) systems since the analog/digital interf
Externí odkaz:
https://doaj.org/article/a466d543cbde446fbfcd2d1418e016a6
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Akademický článek
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Publikováno v:
IET Circuits, Devices and Systems, Vol 15, Iss 5, Pp 448-454 (2021)
Abstract Transceivers built to modern communication standards tend to be as digital as possible, including the radio‐frequency stages. This forces the digital‐to‐analogue converters (DACs) in the transmitter section to have a large bandwidth. D
Externí odkaz:
https://doaj.org/article/f9e28a885196497d9d40e5bb54127d4f