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We investigate the channel capacity of two kinds of uplink OFDMA (Orthogonal Frequency Division Multiple Access) schemes, i.e., ZCZ (Zero Correlation Zone) code time-spread OFDMA and sparse SC-FDMA (Single Carrier Frequency Division Multiple Access) which are robust to access timing offset (TO) among users. For the practical condition, we consider not only the TO among users but also the PAPR (peak...
This paper considers a multiple-DG microgrid connected to the main grid at a point of common coupling (PCC) via a static switch. The DGs in the microgrid can be connected in series and parallel as well. Each DG can also be operated in unit power control (UPC) mode or feeder flow control (FFC) mode. In this paper the active power and frequency response in the microgrid with respect to different configurations...
A microgrid system has multiple distributed generators (DGs) which participate in sharing the local load. The considered microgrid system includes a hybrid source connected to a feeder in parallel with other distributed generators. The hybrid source comprises of a Photovoltaic (PV) array and a Proton exchange membrane fuel cell (PEMFC). The PV array normally uses a maximum power point tracking (MPPT)...
MANET is a new communication network emerging in recent years. The MAC protocols have great influence on performance of MANET. In this article, a power control MAC protocol called CDTC/PC is introduced. CDTC/PC protocol sets two Code Division channels-control channel and data channel, uses three state indicators to controls transmission and reception of nodes, and uses close loop power control to...
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