Results 11 to 20 of about 130,054 (362)
Sigma Delta Modulation Based Ternary FIR Filter Mapping on FPGA [PDF]
Mehran University Research Journal of Engineering and Technology, 2011 In this paper single-bit SDM (Sigma Delta Modulation) based TFF (Ternary FIR Filter) with balanced ternary coefficients (i.e. -1/0/+1) has been mapped on small commercially available FPGAs (Field Programmable Gate Arrays).
Tayabuddin Memon +2 more
doaj +1 more source
Video Transmission by Delta-Sigma Modulation
The Journal of the Institute of Television Engineers of Japan, 1963 テレビジョン信号のように直流をふくむ広帯域の信号を符号化伝送することは, 従来PCM, Δ変調を用いて試みられてきた.本報ではΔ変調と同等の簡単な回路でこれよりすぐれた特性が得られるΔ-Σ変調方式を取上げ, この方式によってテレビジョン信号の伝送実験を行なった結果を報告する.実験のため構成した変調装置はトンネルダイオードを基本要素とし, 最高サンプリング周波数60Mc/s, 伝送帯域3.5Mc/sのもので, これによって水平解像度300～350本の再生画像を得た.
Hiroshi Takano +2 more
openaire +3 more sources
A novel approach toward optimized image processing using sigma delta modulation
Mehran University Research Journal of Engineering and TechnologyImage processing has widespread uses practically in every branch of science and arts. Processing images is more difficult than processing sound or data as there are more bits in the high pixel quality image.
Aneela Pathan +3 more
doaj +3 more sources
Multi-frequency Phase Laser Ranging based on Delta-Sigma Modulation
Guangtongxin yanjiu, 2022 In order to solve the problem that the laser satellite terminal can realize the ranging function while completing the communication function, this paper designs a method based on the Delta-Sigma modulation to realize the laser phase ranging, which can ...
Jin-xin ZUO +6 more
doaj +3 more sources
Information, 2021 This work combines compressive sensing and short word-length techniques to achieve localization and target tracking in wireless sensor networks with energy-efficient communication between the network anchors and the fusion center.
Nuha A. S. Alwan, Zahir M. Hussain
doaj +1 more source
Optimal Design of Mobile Fronthaul Delta-Sigma Modulator based on Search Algorithm
Guangtongxin yanjiu, 2022 The Common Public Radio Interface (CPRI) used in mobile fronthaul has low spectrum efficiency. In this paper, we propose to use Delta-Sigma Modulation (DSM) technology as a new fronthaul interface.
WU Zi-qiang +3 more
doaj +3 more sources
W-band radio-over-fiber transmission system with delta-sigma modulation and direct detection
Chinese Optics Letters (COL), 2023 We experimentally built a W-band photonics-aided millimeter-wave radio-over-fiber transmission system and demonstrated the delivery of up to 8192-ary quadrature amplitude modulation (QAM) signal.
Zhou Ju, Jiaxuan Liu, Jianjun Yu
semanticscholar +1 more source
Low power all-digital radio-over-fiber transmission for 28-GHz band using parallel electro-absorption modulators [PDF]
, 2020 We present a low-power all-digital radio-over-fiber transmitter for beyond 28-GHz using sigma-delta modulation, a 140mW NRZ driver and parallel electro-absorption modulators. 5.25Gb/s (2.625Gb/s) 64-QAM is transported over 10-km SSMF at 1560nm with 7.6% (
Bauwelinck, Johan +12 more
core +2 more sources
Experimental characterization of Sigma Delta Radio over fiber system for 5G C-RAN downlink
ICT Express, 2020 Radio over Fiber is a promising technology for the 5G Cloud Radio Access Network. We demonstrate experimentally Sigma Delta Radio over Fiber by means of Sigma Delta Modulator (SDM) subsequently replacing expensive digital to analog converters.
Muhammad Usman Hadi +3 more
doaj +1 more source
Impulsive Sound Detection Directly in Sigma-Delta Domain
Archives of Acoustics, 2017 Recent implementations of Sigma-delta converters have achieved low cost, low power consumption and high integration while maintaining resolution as high as in Nyquist-rate converters.
Igor Dantas dos Santos MIRANDA +1 more
doaj +1 more source