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We propose a shared protection scheme based on the sharing principle among multiple end-to-content backup paths in optical datacenter networks. Numerical results show it can reduce wavelengths consumption while ensuring the survivability against multi-failures.
Reducing interference to primary users while achieving high throughput for secondary user transmissions is a critical issue in an underlay cognitive radio network. In this paper, we explore the use of beamforming at secondary user transmitters. Two power allocation schemes, fixed transmit power allocation (FTPA) and adaptive transmit power allocation (ATPA) are investigated considering scenarios with/without...
This paper introduces the structural model and the operating principle of B/S model together with the notion of system concept and the architecture of ERP. According to the requirements of the water conservancy and hydropower engineering construction project the function design of the ERP system is presented. Combined with the actual work of construction of hydropower construction enterprises to explore...
This paper intends to introduce to method of constructing a theory of organization based on the closely linked concepts of norms and signs. Such a norm-oriented method is well suited in E-business system development, organizational re-engineering and change. The shift of the paradigm from information flow model to information field theory plays in enabling organizations trying to adapt themselves...
The orthogonal frequency division multiple access (OFDMA) is widely used for its characteristics of high data transmission rate and the flexibility of bandwidth allocation. In this paper, an equivalent SISO model for the MIMO STBC system was presented, and a Multi-user multirate adaptive sub-carrier allocation scheme was proposed also. We apply the algorithm to the OFDMA. The simulations results show...
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