Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Yoshihito Kawai

Hidekuni Yomo

Yoshinori Kunieda

Takaaki Kishigami

Shutai Okamura

Kenichiro Hayashi

Kazuaki Suzuki

Yuuri Yamamoto

It is an object to provide a wireless base station and a terminal equipment capable of shortening the processing time by not requiring the detection of the spatial correlation coefficient, which is required in general technology, and simplifying the selection process for terminal equipments to be connected to each other in a wireless base station that performs spatial multiplexing transmission to a plurality of terminal equipments and a terminal equipment responding for spatial multiplexing transmission. A terminal equipmentincludes an interference cancellation capability information data maintaining sectionthat maintains interference cancellation capability information data indicating the interference cancellation capability of the terminal equipmentand signals the interference cancellation capability information data to a wireless base station. The wireless base stationincludes a control signal extracting unitand a spatial multiplexing controller, and the spatial multiplexing controllerselects one or more terminal equipmentsfor spatial multiplexing connection on the basis of the interference cancellation capability information data extracted from a reception signal from the terminal equipment

Wireless base station and terminal equipment

A relay apparatus, terminal apparatus and relay method for relaying signals with a reduced scale of the apparatus, without temporally switching between transmission and reception and with reduced waste of time when relay is performed at the same frequency on a radio communication network on which bidirectional communication is performed. A radio reception sectionoutputs information signals to a switch, outputs relay control signals to a demodulation sectionafter subjecting predetermined radio reception processing. The demodulation sectiondemodulates a relay control signal. A relay control signal processing sectiondecides the possibility of relay of information signals and inquires, when the relay is possible, whether the terminal apparatus on the receiving side can receive this information signal or not. Furthermore, the relay control signal processing sectionconnects a switchduring the stored relay time. The switchis connected only the information signals to be relayed are received under the control of a relay control section

Relay apparatus, terminal apparatus and relay method

A loop interference canceller that carries out an adaptive operation of responding to time variations of the phase or level of loop interference wave or key station wave at high speed and with high accuracy and reduces the size of an apparatus. The loop interference canceller of the present invention limits the number of data pieces of the transmission path characteristic estimation section, realizes expansion to the entire band not through interpolation but through 0 insertion in a frequency domain and windowing after time domain transformation to reduce the number of data pieces processed and speed up the adaptive operation of the loop interference canceller, and can thereby realize high trackability for time variations of the phase and level of loop interference wave or key station wave, increase the accuracy of processing inside, perform high accuracy cancellation operation, reduce the circuit scale and achieve an advantageous effect of realizing miniaturization of the apparatus.

Wraparound canceller, relay system, and wraparound cancelling method

Growing community of inventors

Kanagawa, Japan

Yoshihito Kawai