• Title, Summary, Keyword: DSP (Digital Signal Processor)

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Development of the Digital Controller for High Precision Digital Power Supply (고정밀전원장치를 위한 디지털 제어기 개발)

  • Ha, K.M.;Lee, S.K.;Kim, Y.S.
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • pp.249-250
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    • 2006
  • In this paper, hardware design and implementation of digital controller for the High Precision Digital Power Supply (HPDPS) based on Digital Signal Processor (DSP) and Field Programmable Gate Array (FPGA) is presented. Developed digital controller is composed of high resolution Digital Pulse Width Modulation (DPWM) and high resolution analog to digital converter circuit with anti-aliasing filter. And Digital Signal Processor (DSP) has the capability of a few micro-second calculation time for one feedback loop. 32-bit DSP and DPWM with 150[ps] step resolution is used to implement the HPDPS. Also 18-bit 2 mega sample per second ADC board is adopted for the developed digital controller. Also, hardware structure of the developed digital controller and experimental results of the first prototype board for HPDPS is described.

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DSP를 이용한 MSP(Multimedia Signal Processor)의 구현

  • 이준형;최윤식
    • ICROS
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    • v.4 no.2
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    • pp.15-17
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    • 1998
  • DSP(Digital Signal Processor)는 신호처리의 응용에 있어서 실시간 처리가 요구되는 경우 탁월한 성능을 나타낸다. 멀티미디어 서비스를 위해서는 전송되어 들어오는 데이터를 빠른 시간에 처리를 하여 원하는 서비스를 제공해야 한다. 따라서 사용자 측에서는 전송된 데이터의 실시간 처리를 위한 특별한 장치가 요구된다. 본 논문에서는 이러한 용도를 위해 DSP를 이용하여 MSP(Multimedia Signal Processor)를 설계한다.

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A Design of Superscalar Digital Signal Processor (다중 명령어 처리 DSP 설계)

  • Park, Sung-Wook
    • Journal of Korean Institute of Intelligent Systems
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    • v.18 no.3
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    • pp.323-328
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    • 2008
  • This paper presents a Digital Signal Processor achieving high through-put for both decision intensive and computation intensive tasks. The proposed processor employees a multiplier, two ALU and load/store. Unit as operational units. Those four units are controlled and works parallel by superscalar control scheme, which is different from prior DSP architecture. The performance evaluation was done by implementing AC-3 decoding algorithm and 37.8% improvement was achieved. This study is valuable especially for the consumer electronics applications, which require very low cost.

A Study of the Digital Modulation using DSP (DSP를 이용한 디지털 변조에 관한 연구)

  • 최상권;최진웅;김정국
    • Proceedings of the Korea Institute of Convergence Signal Processing
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    • pp.89-92
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    • 2001
  • In this paper, as a study of programmable software radio digital communication, we implemented ASK(Amplitude Shift Keying), FSK(Frequency Shift Keying), and PSK(Phase Shift Keying) modulation using programmable software(algorithm) of DSP(Digital Signal Processor). Moreover, it is possible to select one of those three modulation methods by realizing on single DSP. We adopted Motorola DSP56002 and Crystal CS4215(A/D and D/A converter) for our purpose. The DSP56002 is 24-bit and operates 20 MIPS at 40 MHz, and the CS4215 is 16-bit and supports the maximum 50 kHz sampling frequency.

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A Programmable Doppler Processor Using a Multiple-DSP Board (다중 DSP 보드를 이용한 프로그램 가능한 도플러 처리기)

  • 신현익;김환우
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.40 no.5
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    • pp.333-340
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    • 2003
  • Doppler processing is the heart of pulsed Doppler radar. It gives a clutter elimination and coherent integration. With the improvement of digital signal processors (DPSs), the implementation using them is more widely used in radar systems. Generally, so as for Doppler processor to process the input data in real time, a parallel processing concept using multiple DSPs should be used. This paper implements a programmable Doppler processor, which consists of MTI filter, DFB and square-law detector, using 8 ADSP21060s. Formulating the distribution time of the input data, the transfer time of the output data and the time required to compute each algorithm, it estimates total processing time and the number of required DSP. Finally, using the TSG that provides radar control pulses and simulated target signals, performances of the implemented Doppler processor are evaluated.

A calculation algorithm of transcendental functions on a digital signal processor

  • Ebina, Tsuyoshi;Ishii, Rokuya
    • 제어로봇시스템학회:학술대회논문집
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    • pp.962-966
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    • 1989
  • A Digital Signal Processor (abbreviated to DSP) is used not only for digital signal processing but also for kinematic controls[l]. Then applications to these fields are expected to be developed. We propose a function calculation method on DSP which occupies no table memory. By using these functions, more fast or more accurate control will be achieved without using function table.

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Design and Implementation of Software Defined Radio Based IEEE 802.11ac Encoder Using Multicore DSP (멀티코어 DSP를 사용한 SDR 기반 IEEE 802.11ac 인코더의 설계 및 구현)

  • Zhang, Zhongfeng;Ahn, Heungseop;Choi, Seungwon
    • Journal of the Korea Society of Digital Industry and Information Management
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    • v.15 no.4
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    • pp.93-101
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    • 2019
  • This paper presents a software design and implementation of software-defined radio based IEEE 802.11ac encoder using Texas Instruments TMS320C6670 digital signal processor (DSP) platform. In this paper, the implemented encoder has the capability of generating all the signals consisting of preamble field and data field under different modulation & coding scheme in the IEEE 802.11ac standard. Moreover, the flexibility in choosing different rate, bandwidth, or mode can also be achieved by software reconfiguration using the DSP. As a result, by utilizing the computing power provided by multi-cores as well as the FFT coprocessors in the DSP, the required maximum throughput 78Mbps can be fully reached within 4 ㎲ for each OFDM symbol in the case of 20MHz bandwidth of IEEE 802.11ac.

Statistical Simulation for Superscalar DSP Processors (수퍼스칼라 디지털 신호처리 프로세서에 대한 통계적 모의실험)

  • Lee, Jong-Bok
    • Proceedings of the IEEK Conference
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    • pp.1217-1220
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    • 2005
  • In this paper, statistical simulation is applied to a superscalar digital signal processor architecture using DSP kernel and DSP application benchmarks. As a result, the performance of a digital signal processor with several microarchitecture configurations can be estimated with the relative error of 3.7 ${\backslash}%$ on the average.

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Ultrasonic C-scan System Development Using DSP (DSP 를 이용한 초음파 C-scan 시스템 개발)

  • Nam, Young-Hyun;Seong, Un-Hak;Kim, Jeong-Tae
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.7
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    • pp.32-39
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    • 1999
  • Digital signal processor (DSP) is used to obtain the peak value and the time difference of ultrasonic signals, to make digital filter, and to derive mathematical transformation from analog circuit. In this study, C-scan system and control program have been developed to high speed data acquisition. This system consists of signal processing parts (DSP, oscilloscope, pulser/receiver, digitizer), scanner, and control program. The developed system has been applied to a practical ultrasonic testing in overlay weld, and demonstrated high speed with precision

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Development and Performance Test of High Speed Signal Processor for The Millimeter Wave Seeker (밀리미터파 탐색기 고속 신호처리장치 개발 및 시험기)

  • Ha, Chang-Hun;Park, Pan-Soo
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.49 no.1
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    • pp.119-127
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    • 2012
  • This paper describes development and performance test of signal processor for the millimeter wave seeker. A ground to air guidance missile is required various beam patterns in order to counteract different kind of target. Therefore, we designed the hardware and software architecture considering flexibility. This signal processor consists of ADC, FPGA, DSP and etc. FPGA provides peripheral interface to DSP and convert digital IF signal to baseband signal. DSP performs signal processing, calculates target's information and controls devices. Each parts' hardware are connected in series and signal processing algorithms for various beam patterns are built in parallel.