• Journal of Communications and Networks
• /
• v.14 no.2
• /
• pp.195-198
• /
• 2012

An efficient sliding window algorithm employing an adaptive-length guard window for turbo decoders is proposed. The proposed algorithm results in significant complexity reductions, especially for small sliding window lengths where the additional computational complexity required for the guard window is critical.

• Journal of Sensor Science and Technology
• /
• v.28 no.3
• /
• pp.146-151
• /
• 2019

This paper reports a sliding window filtering approach for ground moving targets with cross-correlated sensor noise and uncertainty. In addition, the effect of uncertain parameters during a tracking error on the model performance is considered. A distributed fusion sliding window filter is also proposed. The distributed fusion filtering algorithm represents the optimal linear combination of local filters under the minimum mean-square error criterion. The derivation of the error cross-covariances between the local sliding window filters is the key to the proposed method. Simulation results of the motion of the ground moving target a demonstrate high accuracy and computational efficiency of the distributed fusion sliding window filter.

• 한국태양에너지학회:학술대회논문집
• /
• 2009.11a
• /
• pp.222-226
• /
• 2009

The parts of building which has the most influence on thermal load are skins, outer walls and windows. Among them, window is the worst weak point of building even if it has many advantage of solar radiation gain than other parts. The present time, many researches on various performance of window and many types of system-window are being made. This study evaluates thermal performance of tilt & sliding system window by simulation program Therm 5.2 and Window 5.2. After making a sample model improving it's thermal weak point, this study evaluates real thermal performance of system window. As a result, this study understands manufacture ability condition of domestic company and proposes a research plan of system window.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.32 no.5A
• /
• pp.426-432
• /
• 2007

The MAP algorithm is designed and implemented through the sliding window method for turbo decoding. First, the implementation issues, which are the length of the sliding window and the normalization method of state metrics are reviewed, and their optimal values are obtained by the simulation. All component schemes of the decoder including the branch metric evaluator are also presented. The proposed MAP architecture can be easily redesigned according to the size of sliding window, that is, sub-frame length because of its simplicity on buffer control.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2014.11a
• /
• pp.187-189
• /
• 2014

패킷 네트워크에서 음성, 영상 트래픽이 IP, UDP, RTP 를 이용하여 전송 될 때 중복 헤더가 사용되어 통신의 비효율을 초래한다. 이를 방지 하기 위해 ROHC(Robust Header Compression)가 적용된다. 이는 인접 패킷 헤더 간의 차이 값이 규칙적으로 증가하는 영역은 그 차이 값만을 전송한다. 차이 값은 WLSB 인코딩 과정을 거쳐 전송이 되는데 인코팅 시 Sliding Window 값이 사용된다. Sliding Window 크기에 따라 헤더 압축률이 변하고 대역폭에도 영향을 미치게 된다. 본 논문에서는 효과적인 Sliding Window 값을 구하여 기존 ROHC 에 적용 하여 네트워크 통신의 효율성을 향상 시키고자 한다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.24 no.8A
• /
• pp.1218-1226
• /
• 1999

In decoding the turbo codes, the sliding window BCJR algorthm, derived from the BCJR algorithm, permits a continuous decoding of the coded sequence without requiring trellis fermination of the constituent codes and uses reduced memory span. However, the number of computation required is greater than that of BCJR algorithm and no study on the effect of the window length has been reported. In this paper, we propose an eddicient sliding window type scheme which maintains the advantages of the conventional sliding window algorithm, reduces its computational burdens, and improves is BER performance. A guideline is first presented to determine the proper window length and then a computationally efficient sliding window BCJR algorithm is obtained by allowing the window to be forwarded in multi-step. Simulation results show that the proposed scheme outperforms the conventional sliding window BCJR algorithm with reduced complexity. It gains 0.1dB SNR improvements over the conventional method for the constraint length 3 and BER $10^{-4}$

• Journal of Multimedia Information System
• /
• v.6 no.1
• /
• pp.1-6
• /
• 2019

In the field of industrial applications, the real-time performance of the target detection problem is very important. The most serious time consumption in the pedestrian detection process is the extraction phase of the candidate window. To accelerate the speed, in this paper, a fast extraction of pedestrian candidate window based on the BING (Binarized Normed Gradients) algorithm replaces the traditional sliding window scanning. The BING features are extracted with the positive and negative samples and input into the two-stage SVM (Support Vector Machine) classifier for training. The obtained BING template may include a pedestrian candidate window. The trained template is loaded during detection, and the extracted candidate windows are input into the classifier. The experimental results show that the proposed method can extract fewer candidate window and has a higher recall rate with more rapid speed than the traditional sliding window detection method, so the method improves the detection speed while maintaining the detection accuracy. In addition, the real-time requirement is satisfied.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.27 no.9
• /
• pp.449-454
• /
• 2015

In this study, the effects of lock operations on the infiltration rates for the two window types sliding and lift sliding (LS) are investigated through experiment and simulation. The airtightness levels of the two window types-with locks both on and off-were measured according to the KS F 2292 Test method of airtightness that is used for windows and doors. The air-flow rates of both window types with the locks on for a pressure differential of 10 Pa are $1.98m^3/(m^2h)$ and $1.68m^3/(m^2h)$, respectively; with the locks off, the air-flow rates of the sliding and LS windows are $2.64m^3/(m^2h)$ and $5.83m^3/(m^2h)$, respectively, whereby the air-flow rates are 33% higher for sliding and 247% higher for LS. The air change per hour (ACH) was calculated using the ventilation-simulation software CONTAM. For the sliding window, the ACH changed from 0.45 to 0.57 when the lock was operated from on to off, representing an increase of 27%. For the LS window, the ACH changed from 0.29 to 0.81, showing an increase of 179%.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.30 no.4C
• /
• pp.185-190
• /
• 2005

In IS-95 and IMT-2000 systems using variable code rates and constraint lengths, this paper limits code rate 1/2 and constraint length 3 and realizes forward real-time decoder using Sliding-Window with decoding length 6 and PVSL(Prototype Vector Selecting Logic), LVQ(Learning Vector Quantization) in Neural Network. In comparison condition to theoretically constrained AWGN channel environment at $S/(N_{0}/2)=1$ I verified the superiority of forward real-time decoder through hard-decision and soft-decision comparison between Viterbi decoder and forward real-time decoder such as BER and Secure Communication and H/W Structure.

• Journal of architectural history
• /
• v.32 no.6
• /
• pp.23-32
• /
• 2023

Based on the experience of building 'Waegwan(倭館)' in Busan, Japanese paper wallpapering, the use of square rafters, and the installation of sliding windows were used in the construction of Joseon palaces from the 17th century onwards. Elements that could be applied through observation alone were applied first, and sliding windows that required precise skill acquisition were installed later. 'Yeongchang(影窓)', which refers to a sliding window that brightens an interior, has spread rapidly, and its types and structures have also become more diverse. Gradually, 'Yeongchang' came to refer only to additional windows installed by attaching grooves to the lintel of existing casement windows. The sliding window that is installed independently and acts as an interior partition was renamed 'Chujangja(推障子)'. Japanese architectural elements such as 'Yeongchang' and 'Chujangja' have become an element of traditional Korean architecture.