摘要:
A method of determining a residual frequency offset between a transmitter and a receiver in a transmission of data via a communication channel, is described, wherein the message is transmitted from the transmitter to the receiver via the communication channel and the message comprises at least one short preamble (201), at least one long preamble (202) and user data (203). The at least one long preamble (202) comprises residual frequency offset determination information based on which the residual frequency offset is determined.
摘要:
A signal reconstructing section (50), a receiver having the signal reconstructing section (50), a communication system having the receiver, and a method for reducing noise in a transformed signal having a plurality of signal components and using the signal reconstructing section (50) are described. The signal reconstructing section (50) of the receiver has a detector (52) for detecting the transformed signal, decision modules (54) each having an input (58) coupled to output (60) of the detector, and a reconstructing module (56) having inputs (62) respectively coupled to output (64) of the decision modules (54). The reconstructing module (56) is adapted to reconstruct one or more subcarriers of the plurality of subcarriers a predetermined number of times to thereby form a noise-reduced transformed signal. Reconstruction of the one or more subcarriers is performed one at a time or two or more simultaneously.
摘要:
A magnetic sliding door structure comprises a first and a second magnetic elements attracting each other and disposed on a shell body of a camera and a sliding door, a linkage member disposed below the sliding door, and a third magnetic element disposed at two ends of the linkage member. The third magnetic element repels from the first and second magnetic elements. When one end of the linkage member tilts, the third magnetic element at the other end will enter between the first magnetic element and the second magnetic element to make the sliding door slide toward one side through the repulsive forces between them. This sliding door structure functions based on the physical properties of magnet to avoid complicated gear and rack structures and lower the manufacturing difficulty and cost. Moreover, electric power consumption in the prior art can be saved to increase the standby time of camera.