A combined hybrid ARQ error control and adaptive scheduling scheme is proposed for TDMA/TDD MAC protocols in wireless ATM networks. Type-II hybrid ARQ is chosen as the error recovery scheme, while adaptive fair-queuei...
详细信息
A novel multipath channel estimation method is proposed to solve a special problem that occurs in channel estimation for ETSI's WCDMA uplink communications, where scrambling is introduced in the dedicated physical...
详细信息
This paper presents a new video segmentation algorithm using a combined segmentation measure for content-based coding. The combined segmentation measure is a weighted sum of intensity, motion, and a change segmentatio...
详细信息
This paper presents a new video segmentation algorithm using a combined segmentation measure for content-based coding. The combined segmentation measure is a weighted sum of intensity, motion, and a change segmentation measure. The change segmentation measure is extracted from a change image, which is obtained from the proposed change detector. Since the proposed change detector performs morphological erosion filtering to eliminate many inaccurate components included in the resulting image obtained from a conventional change detector, it can be an efficient segmentation measure for the accurate segmentation of neighboring moving objects and static background regions. Therefore, the proposed combined segmentation measure can determine exact boundaries between moving objects and static background regions.
Multithreading support seems to be the most obvious approach for helping programmers to take the advantage of parallelism by operating systems. Although multithreading for a lot of multiprocessors is powerful, we some...
详细信息
Multithreading support seems to be the most obvious approach for helping programmers to take the advantage of parallelism by operating systems. Although multithreading for a lot of multiprocessors is powerful, we sometimes still lack good parallelizing compilers to help programmers exploit parallelism and gain performance benefit. In this paper, a model of FORTRAN parallelizing compiler on multithreading OSF/1 is first proposed and then generalized to be useful hi constructing a parallelizing compiler for a particular language, to generate insight into the development of a high-performance parallelizing compiler.
The identification of phoneme boundaries in continuous speech is an important problem in areas of speech recognition and synthesis. The use of robust parameters to allow a trained data set obtained from one language t...
详细信息
This paper relates to system-level design of signal processing systems, which are often heterogeneous in implementation technologies and design styles. The heterogeneous approach, by combining small, specialized model...
This paper relates to system-level design of signal processing systems, which are often heterogeneous in implementation technologies and design styles. The heterogeneous approach, by combining small, specialized models of computation, achieves generality and also lends itself to automatic synthesis and formal verification. Key to the heterogeneous approach is to define interaction semantics that resolve the ambiguities when different models of computation are brought together. For this purpose, we introduce a tagged signal model as a formal framework within which the models of computation can be precisely described and unambiguously differentiated, and their interactions can be understood. In this paper, we will focus on the interaction between dataflow models, which have partially ordered events, and discrete-event models, with their notion of time that usually defines a total order of events. A variety of interaction semantics, mainly in handling the different notions of time in the two models, are explored to illustrate the subtleties involved. An implementation based on the Ptolemy system from U.C. Berkeley is described and critiqued.
We extend the results of our previous paper [8] to the nonlinear case: The Lloyd polynomial of the covering has at least R distinct roots among 1,…, n, where R is the covering radius. We investigate PWC with diameter...
详细信息
A PACS architecture was simulated to quantify its performance. The model consisted of reading stations, acquisition nodes, communication links, a database management system, and a storage system consisting of magnetic...
详细信息
作者：
Maruyama, SatoshiIwanami, YasunoriIkeda, TetsuoFaculty of Engineering
Nagoya Institute of Technology Nagoya Japan 486 Satoshi Maruyama graduated 1983 Dept. Electrical Eng.
Fac. Eng. Nagoya Inst. Technology. Completed Master's program 1985 Grad. School and affiliated with Fujitsu Co. Engaged in researches in distance measurement by spread spectrum technique. Tetsuo Ikeda graduated 1961 Dept. Comm. Eng.
Fac. Eng. Tohoku University. Completed doctoral program 1966 Grad. School. Assistant 1966 and Assoc. Prof. 1968 Fac. Eng. Tohoku University. Assoc. Prof. 1973 and Prof. 1977 Nagoya Inst. Technology. Engaged in researches in network theory computer networks communication system and electromagnetic environment. Doctor of Eng. Member I.E.E.E. Japan TV Soc. Jap. Inf. Proc. Soc. Jap. Soc. Inf. Comm. and I.E.E.E.
The spread spectrum (SS) communication is a communication system which has excellent characteristics against noise and is suited to the code-division multiplex. This paper describes a method which reduces the tracking...
详细信息
The spread spectrum (SS) communication is a communication system which has excellent characteristics against noise and is suited to the code-division multiplex. This paper describes a method which reduces the tracking phase error in DLL due to multipath waves in SS communication system. The method is based on the model with a single multipath wave.
作者：
W. H. SandersJ. F. MeyerComputing Research Laboratory
Dept. of Electrical Engineering and Computer Science The University of Michigan Ann Arbor Michigan and Communications and Network Laboratory Industrial Technology Institute Ann Arbor Michigan
暂无评论