Learn More
In this paper, the integration of large-area-synchronized code division multiple access (LAS-CDMA) technology and multicarrier technology is studied. Single cell LAS-CDMA system takes LS codes as its spread spectrum code which have good correlation property, so that the inter-symbol interference (ISI) and multiple access interference (MAI) can be eliminated(More)
Requirements elicitation and analysis is intended to gain knowledge about users' requirements and the information system environment. Requirement analysts should understand the application domain, demands, and constraints of the project clearly in order to make realistic software size and effort estimates, and to have a solid foundation for defining(More)
High quality universities' teaching & research resources sharing could help realizing the complementary advantages between all levels universities and promoting whole higher education quality. After the introduction of SaaS and summary analysis of domestic university resource-sharing, some teaching & research resource-sharing applied scenes(More)
In order to further decrease the detection complexity, a joint detection method based on both zero forcing and sphere decoding is proposed. When the signal-to-noise ratio is high enough, such detector results in zero forcing detection, otherwise it subtracts the decoded signals from the receiving signal and then decodes them by sphere decoding algorithm. In(More)
Loosely-synchronized code division multiple access (LS-CDMA) technology is an excellent CDMA technology and very suitable to be applied in the future wireless communication systems. When the multiple input multiple output (MIMO) technique is integrated, better performance and system capacity can be achieved. But the computational complexity of classical(More)