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The cloud radio access network (C-RAN) has become a promising architecture for future wireless communication system. In general C-RAN architecture, baseband units processing resource are centralized to form the baseband resource pool, which connects to remote radio units (RRUs) with the switching unit. In accordance with the traffic variation, the necessary on-state baseband resources are allocated...
This paper presents a high parallel macro block level layered LDPC decoder architecture for the quasi-cyclic low-density parity-check (QC-LDPC) codes with various code rates and code lengths. LDPC codes defined in WiMAX standard with 6 code rates and 19 code lengths are chosen as the demonstration of this architecture. Based on the proposed dedicated matrix reordering strategy, this decoder costs...
This paper presents an efficient architecture of finding the first two minimum values for row operation in LDPC decoding. Given a set of numbers X, efficient algorithm and its corresponding hardware implementation for finding the first minimum value, min_1st, second minimum value, min_2nd and the position of min_1st are greatly needed in LDPC decoder design. The design is based on sorting-based approach...
Traditional methods of application development through tightly coupled components can no longer satisfy increased demands and urgently needed geospatial applications. In this paper, service-oriented architecture and spatial Web services are utilized to design and develop a geospatial portal. Geospatial portals use Web services to publish available geospatial data and processing services, help applications...
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