Abstract: The invention relates to the field of signal processing, and particularly to method and apparatus for determining a peak power, a peak-to-average power ratio. The method for determining the peak power comprises: obtaining a sampling power at a current sampling time; comparing the sampling power at the current sampling time with an estimated peak power at the current sampling time; and when the sampling power at the current sampling time is greater than the estimated peak power at the current sampling time, determining the sampling power at the current sampling time as an actual peak power at the current sampling time. With the present invention, detection efficiency of the peak power is improved, and the peak power can be determined in real time at each sampling time.

Abstract: Disclosed in the present invention is a carrier communication method, device and system of low-voltage power lines, wherein, the carrier communication method includes: acquiring communication data comprising user data transmitted during communication and frame control data for assisting decoding of the user data; encoding the communication data using orthogonal space-time block codes and generating multipath transmission signals, in the case of unknown channel status; and transmitting the multipath transmission signals to an electric energy meter respectively via three-phase power lines. The present invention fully employs the characteristic of distinct inter-phase coupling of electrical signals at medium-and-high frequencies along power lines, and adopts various space-time encoding and decoding technologies, thereby improving the reliability of power line carrier communication between the concentrator and the electric energy meter.

Abstract: Disclosed in the present invention is a carrier communication method, device and system of low-voltage power lines, wherein, the carrier communication method includes: acquiring communication data comprising user data transmitted during communication and frame control data for assisting decoding of the user data; encoding the communication data using orthogonal space-time block codes and generating multipath transmission signals, in the case of unknown channel status; and transmitting the multipath transmission signals to an electric energy meter respectively via three-phase power lines. The present invention fully employs the characteristic of distinct inter-phase coupling of electrical signals at medium-and-high frequencies along power lines, and adopts various space-time encoding and decoding technologies, thereby improving the reliability of power line carrier communication between the concentrator and the electric energy meter.

Abstract: The invention relates to the field of signal processing, and particularly to method and apparatus for determining a peak power, a peak-to-average power ratio. The method for determining the peak power comprises: obtaining a sampling power at a current sampling time; comparing the sampling power at the current sampling time with an estimated peak power at the current sampling time; and when the sampling power at the current sampling time is greater than the estimated peak power at the current sampling time, determining the sampling power at the current sampling time as an actual peak power at the current sampling time. With the present invention, detection efficiency of the peak power is improved, and the peak power can be determined in real time at each sampling time.

Abstract: An extended deinterleaver the extended deinterleaver being responsive to at least one input signal, comprised of codewords, and operative to generate a deinterleaved output signal. The extended deinterleaver comprising a storage space organized into B number of appended storage branches, at least one appended storage branch having a storage branch and at least one element N, the received codewords being deinterleaved and buffered by the extended deinterleaver prior to being provided to the variable iteration decoder. Each appended storage branch further having a length that is extended by the length of N, N being at least one element, wherein as a codeword is provided to the variable iteration decoder, other codewords are provided to subsequent appended storage branches, and further wherein each appended storage branch, indexed by ‘b’, has a length of Lb+N, wherein Lb is the length of the storage branch prior to appending N.

Abstract: An extended deinterleaver the extended deinterleaver being responsive to at least one input signal, comprised of codewords, and operative to generate a deinterleaved output signal. The extended deinterleaver comprising a storage space organized into B number of appended storage branches, at least one appended storage branch having a storage branch and at least one element N, the received codewords being deinterleaved and buffered by the extended deinterleaver prior to being provided to the variable iteration decoder. Each appended storage branch further having a length that is extended by the length of N, N being at least one element, wherein as a codeword is provided to the variable iteration decoder, other codewords are provided to subsequent appended storage branches, and further wherein each appended storage branch, indexed by ‘b’, has a length of Lb+N, wherein Lb is the length of the storage branch prior to appending N.