9 research outputs found

    A Study on the protection of corporate bondholders : with particular respect to the conflict of interest between bondholders and shareholders

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    ν•™μœ„λ…Όλ¬Έ(박사)--μ„œμšΈε€§ε­Έζ ‘ 倧學陒 :法學科 ε•†δΊ‹ζ³•ε°ˆζ”»,1997.Docto

    WCDMA μ‹œμŠ€ν…œμ—μ„œ κ°œμ„ λœ SIR 좔정기법에 κ΄€ν•œ 연ꡬ

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    ν•™μœ„λ…Όλ¬Έ(석사)--μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› :전기·컴퓨터곡학뢀,2002.Maste

    Legal Rules and Soft Law in Corporate Governance

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    The corporate governance models of US and UK have influenced many countries around the world. After the Enron scandal in the US, merit regulation on corporate governance by mandatory legal rules was enhanced by enacting Sabanes-Oxley Act. On the other hand, UK kept on the soft law approach on corporate governance suggested first by the Cadbury Committee. In the UK, listed companies are required by the Listing Rules to disclose whether they comply with the Code or explain the reason in case of the deviation from the Code. This comply or explain approach has been followed by many countries, including Germany. In this article, the merits and weaknesses of these two comparable approaches on corporate governance regulation are analyzed to provide some implications in designing the regulations on corporate governance of Korean companies

    Improved SIR estimation in the downlink of WCDMA systems

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    WCDMA μ‹œμŠ€ν…œμ—μ„œλŠ” μ–‘λ°©ν–₯링크 λͺ¨λ‘μ—μ„œ λΉ λ₯Έ μ „λ ₯μ œμ–΄λ₯Ό ν‘œμ€€μœΌλ‘œ μ±„νƒν•˜κ³  μžˆλ‹€. μ „λ ₯μ œμ–΄μ˜ 기쀀이 λ˜λŠ” SIR 값을 μ–»κΈ° μœ„ν•΄μ„œλŠ” μ‹ ν˜Έμ „λ ₯κ³Ό μž‘μŒμ „λ ₯을 μΆ”μ •ν•˜λŠ” 것이 ν•„μš”ν•˜λ©°, 특히 μ‹ ν˜Έμ „λ ₯ 좔정을 μœ„ν•΄μ„œλŠ” 채널좔정 정보가 μš”κ΅¬λœλ‹€. WCDMA ν•˜ν–₯링크의 경우 SIR 좔정에 ν•„μš”ν•œ 파일럿 μ‹¬λ²Œμ΄ 데이터 μ‹¬λ²Œκ³Ό μ‹œλΆ„ν• λ‹€μ€‘ν™”λ˜μ–΄ ν”„λ ˆμž„ ꡬ쑰λ₯Ό 이룬닀. λ³Έ λ…Όλ¬Έμ—μ„œλŠ” 파일럿 채널인 CPICH와 DPCH λ‚΄μ˜ 파일럿 μ‹¬λ²Œμ„ λ™μ‹œμ— μ΄μš©ν•˜μ—¬ 보닀 μ •ν™•ν•˜κ²Œ 채널을 μΆ”μ •ν•¨μœΌλ‘œμ¨, SIR μΆ”μ •μ˜ 정확도λ₯Ό κ°œμ„ ν•˜λŠ” 기법을 μ œμ•ˆν•œλ‹€. μ œμ•ˆκΈ°λ²•κ³Ό 기쑴의 기법을 μ „μ‚°λͺ¨μ˜ μ‹€ν—˜μ„ ν†΅ν•˜μ—¬ 링크 μ„±λŠ₯κ³Ό SIR μΆ”μ •μ˜ 정확도λ₯Ό λΉ„κ΅ν•œλ‹€

    Design of WCDMA modem for IMT-2000 systems

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    κ΄‘λŒ€μ—­ CDMA(WCDMA : Wideband Code Division Multiple Access)λŠ” 비동기식 IMT-2000 ν‘œμ€€μ•ˆμœΌλ‘œμ„œ 각쒅 μ΅œμ‹  κΈ°μˆ μ„ μ ‘λͺ©μ‹œν‚€κΈ° μš©μ΄ν•˜λ‹€λŠ” μž₯점과 ν˜„μž¬ 세계 μ‹œμž₯의 절반 이상을 μ°¨μ§€ν•˜κ³  μžˆλŠ” GSM의 인프라 λ•Œλ¬Έμ— IMT-2000 μ‹œμž₯μ—μ„œ μ£Όλͺ©μ„ λ°›κ³  μžˆλ‹€. λ³Έ λ…Όλ¬Έμ—μ„œλŠ” 3GPP ν‘œμ€€μ•ˆμ— λ”°λ₯Έ WCDMA 단말기 λͺ¨λŽ€ μ‹œμŠ€ν…œμ˜ 섀계와 κ΅¬ν˜„μ— λŒ€ν•΄ κΈ°μˆ ν•œλ‹€. λ˜ν•œ WCDMA의 핡심 변볡쑰 기술인 μ±„λŸ¬ μΆ”μ •κ³Ό μ „λ ₯ μ œμ–΄ 및 μ…€ 탐색 기법에 λŒ€ν•΄ ν–₯μƒλœ μ•Œκ³ λ¦¬λ“¬μ„ μ œμ•ˆν•˜κ³  μ΄λŸ¬ν•œ μ•Œκ³ λ¦¬λ“¬μ΄ μ‹€μž₯된 λͺ¨λŽ€μ˜ μ„±λŠ₯을 λΆ„μ„ν•œλ‹€. 개발된 λͺ¨λŽ€μ€ ν–₯μƒλœ 섀계 기쀀에 따라 μ—¬λŸ¬ μ†‘μˆ˜μ‹  λͺ¨λ“ˆλ“€μ΄ 효율적으둜 톡합될 수 μžˆλ„λ‘ κ΅¬ν˜„λ˜μ—ˆμœΌλ©° κ°œμ„ λœ 적응 채널 μΆ”μ • 및 SIR μΆ”μ • 기법을 μ‚¬μš©ν•˜μ—¬ κΈ°μ‘΄ μƒμš© 기법을 μ‚¬μš©ν•œ 단말기 λͺ¨λŽ€μ— λΉ„ν•΄ 도심 ν™˜κ²½μ—μ„œ 0.5~1.0dB 정도 ν–₯μƒλœ μ„±λŠ₯을 λ‚˜νƒ€λƒ„μ„ ν™•μΈν•˜μ˜€λ‹€. ; Recently, wideband code division multiple access (WCDMA) system attracts much attention since it can provide high-speed data rate that can support the multi-media service. This paper considers the design of WCDMA modem and implementation aspects. We propose the adaptive channel estimator, the enhanced power control scheme, and the novel cell search technique. The performance of the implemented modem that incorporate the proposed schemes are compared with that of the system with a conventional techniques. The proposed system can provide the performance improvement by 0.5~1.0dB compared to the conventional system
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