摘要:
A base station in a wireless communication system and a method for controlling power by the same are provided. The method includes receiving channel state information from a mobile terminal, calculating information regarding a Modulation order Product code Rate (MPR) of the mobile terminal using the channel state information, and controlling transmission power for the mobile terminal according to the information regarding the MPR.
摘要:
A TDM (Time Division Multiplexing)-based mobile communication system that switches a service type according to QoS (Quality of Service). The mobile communication system includes a base transceiver system (BTS) and a mobile station (MS) connected to the BTS. The BTS monitors whether a first service provided from the BTS to the MS is satisfied according to whether at least as much data as a predetermined transmission amount is transmitted to the MS. If the first service is dissatisfied, the BTS switches a service to a second service lower in QoS than the first service so that as much data as a transmission amount smaller than the predetermined transmission amount is transmitted to the MS.
摘要:
A scheduling apparatus for a base transceiver system (BTS), determines a point of data transmission to mobile stations (MSs). The BTS includes buffers for storing data to be transmitted to the MSs. A scheduler determines a priority of each of the MSs taking into account a data rate determined depending on a channel condition between the BTS and the MSs, a required amount of transmission data, and an amount of data to be transmitted to the MSs, and determines an MS having the highest priority among the MSs, as a destination MS to which data is to be transmitted by the BTS. The scheduler increases the required amount of transmission data upon receipt of a retransmitted data packet, and decreases the required amount of transmission data after transmitting data to the MSs.
摘要:
A method and apparatus for transmitting and receiving a Hybrid Automatic Repeat reQuest (HARQ) burst in a communication system are provided. A transmitter obtains at least one Protocol Data Unit (PDU) according to a decoding order of a receiver which supports a HARQ mode. The receiver controls an order of at least one HARQ burst using burst information including a HARQ Channel IDentifier (ACID).
摘要:
A photoelectric conversion module including a pair of substrates facing each other and forming a space for containing an electrolyte therein, a sealing member placed along the edges of the pair of substrates to seal the electrolyte, defining a plurality of photoelectric cells between the pair of substrates, and having an open portion to form an electrolyte inlet, and an inlet sealer formed along the electrolyte inlet. The photoelectric conversion module has improved durability, reliability, and mass-productivity.
摘要:
A dye for dye-sensitized solar cells includes an organometallic complex represented by M(L)pX2:(Z)q. In the organometallic complex, M is a Group 8 through Group 10 metallic element, L is a bidentate ligand, X is a co-ligand, and Z is a counter-ion. The ratio of the bidentate ligand (L) to the counter-ion (Z) is about 1.1 to about 1.4. A method of preparing an exemplary dye includes mixing the organometallic complex with tetrabutylammonium thiocyanate and tetrabutylammonium hydroxide to prepare a solution, and purifying the solution at a pH of about 3.8 to about 4.1. A dye-sensitized solar cell includes a first electrode with a light absorbing layer, a second electrode and an electrolyte between the first and second electrodes. The light absorbing layer includes the dye.
摘要:
A dye-sensitized solar cell that includes a semiconductor layer, to which a photosensitive dye generating electrons is adhered; a photo electrode disposed on a side of the semiconductor layer so as to transfer electrons; and an auxiliary electrode disposed on the other side of the semiconductor layer so as to transfer the electrons, and at least one semiconductor layer and at least one auxiliary electrode are stacked alternatively. Thus, an amount of molecules of the photosensitive dye may be increased without increasing the moving distance of electrons, and the efficiency of the solar cell may be increased.
摘要:
A dye-sensitized solar cell that includes a semiconductor layer, to which a photosensitive dye generating electrons is adhered; a photo electrode disposed on a side of the semiconductor layer so as to transfer electrons; and an auxiliary electrode disposed on the other side of the semiconductor layer so as to transfer the electrons, and at least one semiconductor layer and at least one auxiliary electrode are stacked alternatively. Thus, an amount of molecules of the photosensitive dye may be increased without increasing the moving distance of electrons, and the efficiency of the solar cell may be increased.
摘要:
A photoelectric conversion device that includes: a light-receiving substrate, on which a photoelectrode is formed; a counter substrate that is disposed facing the light-receiving substrate, on which a counter electrode is formed; a semiconductor layer that is formed on the photoelectrode, into which a photosensitive dye is absorbed; and an electrolyte layer that is formed between the semiconductor layer and the counter electrode. The counter electrode includes a catalyst layer formed directly on the counter substrate.
摘要:
An apparatus and method for detecting a pilot signal in a mobile communication system are provided by which the processing time taken to demodulate a traffic channel based on a channel estimation result can be reduced, and thus, the size of a buffer for buffering signals until the presence of a secondary/auxiliary pilot signal is detected can also be reduced. The apparatus includes a first channel estimator for estimating a channel for a noise component of a pilot symbol received by a first receiver, a second channel estimator for adding a pilot symbol received by a second receiver and the pilot symbol received by the first receiver and estimating a channel for a noise component of the added pilot symbol, an energy detector for detecting an energy value of a pilot symbol using result values output from the first and second channel estimators, and a comparison and determination unit for determining whether or not there is a secondary/auxiliary pilot signal by using the detected energy values.