서지주요정보
매크로셀과 광마이크로셀로 구성된 다층 셀 동기식 CDMA 시스템을 위한 PN offset 할당 방법 = PN offset planning method for multi-layer synchronous CDMA network composed of macrocells and fiber-optic microcells
서명 / 저자 매크로셀과 광마이크로셀로 구성된 다층 셀 동기식 CDMA 시스템을 위한 PN offset 할당 방법 = PN offset planning method for multi-layer synchronous CDMA network composed of macrocells and fiber-optic microcells / 정영호.
저자명 정영호 ; Jung, Young-Ho
발행사항 [대전 : 한국과학기술원, 2000].
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8010515

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 00085

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초록정보

In This thesis, some efficient PN offset planning strategies are proposed for the PN offset planning problems in multi-layer synchronous CDMA network encompassing both macrocells and fiber-optic microcells. Recently, fiber-optic microcellular systems have been recognized as economical means for increasing capacity of mobile communications. When a fiber-optic microcellular system is applied to a synchronous CDMA system special caution is required in planning PN offsets identifying conventional base-stations(macro cells) and micro base station(fiber-optic microcells) because of the transmission delay between a MSBTS and each micro base station. Proposed methods divide the total PN offset planning problem into two independent PN offset planning problems, PN offset planning problem for macrocells and PN offset planning problem for fiber-optic microcells, by dividing available PN offsets into two groups- one for macrocells and the other for microcells - and guard intervals between them. To solve the PN offset planning problem for the macrocells, conventional PN offset planning strategy is used and to solve the PN offset planning problem for the fiber-optic microcells, new PN offset planning methods are proposed. First, we introduce three different PN offset planning methods for fiber-optic microcells based on cluster reuse. ToFoD method simply incorporates the fiber-optic delay with the conventional method for the macrocells. I-ToFoD method tries to improve ToFoD method by assigning PN offsets with advanced phases to micro base stations having shorter fiber-optic delay. In Pseudo-GPS method, fiber-optic delay is pre-compensated at MSBTS. These methods based on PN offset reusing by cluster can give optimal solution for the uniform ideal hexagonal cell network, but they cannot be used for the fiber-optic microcell network composed of small microcells whose radii are less than a few hundred meters. Second, we present a graph coloring based PN offset planning method. This method dose not guarantees the optimal solution but this gives a sub-optimal solution for the large variety of fiber-optic micro cell networks. This proposed method can be effectively used especially for the island cell featured fiber-optic microcell network.

서지기타정보

서지기타정보
청구기호 {MEE 00085
형태사항 ii, 61 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Young-Ho Jung
지도교수의 한글표기 : 이용훈
지도교수의 영문표기 : Yong-Hoon Lee
학위논문 학위논문(석사) - 한국과학기술원 : 전기및전자공학전공,
서지주기 참고문헌 : p. 60-61
주제 PN offset 할당문제
광마이크로셀
동기식 코드분할 다중접속
그래프 채색
PN offset planning
Fiber-optic microcell
Synchronous CDMA
Graph coloring
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