• Title/Summary/Keyword: Stop and go

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Dual-Mode Type Stop-and-Go Adaptive Blind Equalization Algorithm (이중모드 형태의 Stop-and-Go 적응 블라인드 등화 알고리즘)

  • 정영화;진용옥
    • The Journal of the Acoustical Society of Korea
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    • v.17 no.2
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    • pp.11-17
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    • 1998
  • 본 논문에서는 빠른 수렴 속도를 가지면서 정상 상태에서 작은 오차 레벨을 유지하 는 이중모드 형태의 Stop-and-Go 알고리즘을 제안한다. 제안된 알고리즘은 특별한 결정 영 역을 설정하여 등화기 출력 레벨이 어느 영역에 속하느냐에 따라 MCMA와 판정지향 알고 리즘을 결합한 변형된 Stop-and-Go 알고리즘과 기존의 Stop-and-Go 알고리즘의 동작을 자동 전환한다. 컴퓨터 모의실험 결과, 제안한 알고리즘이 CMA, MCMA 및 Stop-and-Go 알고리즘등과 같은 기존의 적응 블라인드 등화 알고리즘들에 비해 잔류 심볼간 간섭과 정상 상태로의 수렵 속도면에서 모두 우수한 성능을 가짐을 확인하였다.

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A Study on the performance Improvement of the Adaptive Blind Equalizer Using the Soft Decision-Directed Stop-and-Go Algorithm (연판정지향 Stop-and-Go 알고리즘을 이용한 적응 블라인드 등화기의 성능 향상에 관한 연구)

  • 정영화
    • The Journal of Information Technology
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    • v.2 no.1
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    • pp.103-113
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    • 1999
  • In this paper, we propose th soft decision-directed sto-and-go algorithm combining a concept of the stop-and-go algorithm with soft decision-directed algorithm. The proposed algorithm has an enhanced equalization performance according to using the more confidential error signal than two algorithms. By computer simulation, it is confirmed that the proposed algorithm has the performance superiority in terms of residual ISI and convergence speed compared with the adaptive blind equalization algorithm of CMA, Modified CMA(MCMA), Stop-and Go algorithm and simplified 50ft decision-directed algorithm.

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STOP AND GO CRUISE CONTROL

  • Venhovens, P.;Naab, K.;Adiprasito. B.
    • International Journal of Automotive Technology
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    • v.1 no.2
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    • pp.61-69
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    • 2000
  • This paper will address the basic requirements for realizing a stop and go cruise control system. Issues discussed comprise: functional, sensor and basic HMI requirements, primary characterization of naturalistic stop & go driving, and the basic approach of the transformation of situational knowledge in an elementary controller.

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A Study of Novel Stop-&-Go Equalization Using Bank Structure (Bank 구조를 이용한 Novel STOP-&-GO)

  • 조경철;강영창김선형
    • Proceedings of the IEEK Conference
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    • 1998.10a
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    • pp.1195-1198
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    • 1998
  • A Novel Stop-&-Go Algorithm which incorporate a Bank structure for blind equalization is investigated in this paper. 16-QAM and $\pi/4-DQPSK$ modulation used in this paper. A Proposed novel algorithm of characteristic is high speed transfer by implementation of the equalization algorithm with less computations capacity. The computer simulations result reveal that the proposed Novel Stop-&-Go shows the comparable performance to the conventional Stop-&-Go, while requiring much less computations.

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A Study on Near Cut-In Performance Comparison on Adaptive Cruise Control Stop&Go (ACC Stop&Go 시스템의 근접 Cut-In 성능 비교에 대한 연구)

  • Lee, Dong-Han;Cho, Cheol-Ho
    • Transactions of the Korean Society of Automotive Engineers
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    • v.20 no.2
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    • pp.103-109
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    • 2012
  • Adaptive cruise control Stop&Go system has been developed to reduce the driver's workload on highway or public road. This system is characterized by a moderate control of engine and brake actuator. A control system capable of modeling driver's driving characteristics has been constructed to provide natural vehicle behavior in full speed driving. But, ACC Stop&Go system has some limitations. One of the limitations is a detection limitation on near cut-in situation. This paper presents development of the near cut-in test procedure, finding of the limitation value on near cut-in scenario and performance comparisons on ACC Stop&Go system.

A New Blind Equalization Algorithm with A Stop-and-Go Flag (Stop-and-Go 플래그를 가지는 새로운 블라인드 등화 알고리즘)

  • Jeong, Young-Hwa
    • The Journal of Information Technology
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    • v.8 no.3
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    • pp.105-115
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    • 2005
  • The CMA and MMA blind equalization algorithm has the inevitable large residual error caused by mismatching between the symbol constellation at a steady state after convergence. Stop-and-Go algorithm has a very superior residual error characteristics at a steady state but a relatively slow convergence characteristics. In this paper, we propose a SAG-Flagged MMA as a new adaptive blind equalization algorithm with a Stop-and-Go flag which follows a flagged MMA in update scheme of tap weights as appling the flag obtaining from Stop-and-Go algorithm to MMA. Using computer simulation, it is confirmed that the proposed algorithm has an enhancing performance from the viewpoint of residual ISI, residual error and convergence speed in comparison with MMA and Stop-and-Go algorithm. Algorithm has a new error function using the decided original constellation instead of the reduced constellation. By computer simulation, it is confirmed that the proposed algorithm has the performance superiority in terms of residual ISI and convergence speed compared with the adaptive blind equalization algorithm of CMA family, Constant Modulus Algorithm with Carrier Phase Recovery and Modified CMA(MCMA).

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The modified adaptive blind stop-and-go algorithm for application to multichannel environment (다중 채널 환경에 적용을 위한 변형된 적응 블라인드 stop-and-go 알고리듬)

  • 정길호;김주상;변윤식
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.21 no.4
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    • pp.884-892
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    • 1996
  • An adaptive blind equalizer is used to combat the distortions caused by a nonideal channel without resorting to a training sequence, given the received signal and statistical information of the transmitted signal. Incidentally, a multipath channel may result in a fade which produces intersymbol interference in the received signal. Therefore, a new type of algorithm which can compenste the effects of this fade is required in the multipath channel environment. In this paper, a modified form of adaptive blind equalization algorithm using stop-and-go algorithm for multichannel system is proposed. It is demonstrated via computer simulations that the performance of the proposed multichannel stop-and-go algorithm is much better than that of the conventional multichannel algorithms.

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A Throttle/Brake Control Law for Stop and Go Cruise Control System (정지/서행 순항 제어 시스템을 위한 쓰로틀/브레이크 제어기법)

  • Hong, Jin-Ho;Yi, Kyong-Su
    • Proceedings of the KSME Conference
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    • 2000.11a
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    • pp.641-646
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    • 2000
  • This paper addresses a throttle/brake control law for stop and go cruise control systems which make the vehicle remain at a safe distance from a preceding vehicle according to the driver's preference, automatically slow down and come to a full stop behind a preceding vehicle. The uncertainties of vehicle model have been considered in the design of the control law. The effect of throttle/brake control has been investigated via simulations. The simulations were performed using a complete nonlinear vehicle model. The results indicate that the proposed throttle/brake control law can provide the stop and go cruise control system with a good distance tracking performance.

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Decision Making Model for Powertrain Mount-Stop&Go Performance in a compact mobile (소형 승용차의 파워트레인 마운트 Stop&Go 성능 적용을 위한 의사결정모델)

  • Yu, Jung-Woo;Um, In-Sup;Lee, Hong-Chul
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.3
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    • pp.967-976
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    • 2012
  • This study presents a model to minimize vibration and noise of powertrain mount on a compact car which has the application of Stop & Go performance, in order to reduce CO2 and achieve better fuel-efficiency in accordance with the environmental regulations in automotive industries. In the first step, we analyze the powertrain mount system of the automobile "A" and present variables about rubber stiffness applied on powertrain mount using the Taguchi method. In the next step, we verify the optimization of vibration and noise which meet Stop & Go performance using the AHP(Analytic Hierarchy Process) method on the proto products for each variable. Using this validation system on the initial stage of the powertrain mount design, it is expected that we can grasp vibration and noise problems caused by engine movements and control them effectively without engineering know-how about powertrain mount rubber stiffness.

Blind Adaptive Equalizer Using the Improved Radius-Directed Algothm (개선된 반경-지향 방식을 이용한 블라인드 적응 등화기)

  • 윤영우;이영조;조형래;홍대식;강창언
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.19 no.7
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    • pp.1364-1373
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    • 1994
  • In this thesis, an algorithm for fast convergence to the steady state and for achieving an improved MSE in blind adaptive equalizers is proposed. The conventional radius-directed algorithm can be transformed into an algorithm that provides effective blind convergence in the aspect of the MSE as the convergence speed. This can be achieved through altering the stop and go algorithm. The performance of the new algorithm is analyzed and compared with the two conventional algorithms, such as the CMA and the stop and go algorithm. The experimental results show the superiority of the new algorithm.

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