Abstract: A method includes: determining a Cyclic Shift (CS) parameter that implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of a User Equipment (UE), and transmitting the determined CS parameter to the UE, wherein the orthogonality-related information includes an Orthogonal Cover Code indicated by the CS parameter, the orthogonality allocation rule is determined as a uniform scheme or a non-uniform scheme according to the CS parameter, determining the CS parameter by which the non-uniform scheme is applied if the UE is in a Single User Multiple Input Multiple Output state, and determining the CS parameter by which the uniform scheme is applied if the UE is in a Multiple User Multiple Input Multiple Output state.

Abstract: Provided are an apparatus and method for transmitting data using multiple antennas and beamforming. The apparatus of the present invention comprises: a modulation unit which performs constellation mapping on input bits to generate modulated symbols; a pre-coding unit which multiplies a pre-coding matrix and the modulated symbols to generate pre-coded symbols; and a plurality of transmitting antennas for transmitting the pre-coded symbols. According to the present invention, a beam width is maintained constant, regardless of a radiation angle, thus preventing a loss of power caused by an angular spread and preventing the generation of shadow zone at a large radiation angle.

Abstract: The demand response system comprises an automatic meter reading (AMR) unit to generate metering information. The demand response system comprises a multiple utility complex unit (MUC) which provides DR information based on the metering information and manages utility supply schedule in combination. The demand response system comprises an eco index (EI) calculation unit which calculates an eco index based on the metering information. The demand response system comprises a demand response (DR) unit which obtains the CBL information based on the metering information and computes a the DR bill by using the CBL data, the DR information and EI obtained, and outputs the DR bill. The demand response system comprises a smart portal (SP) unit which provides users with the calculated DR bill. According to the disclosure, the demand response system can provide environmental and social information, in addition to economic information.

Abstract: Embodiments of the present invention relate to a wireless communication system, and more particularly, to a technology for allocating a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system. Embodiments of the present invention provides an apparatus and method for allocating CSI-RSs to resource areas, in which, under the condition of a subframe in which the CP is an extended CP, and the duplex scheme is TDD, if CSI-RSs for maximum 8 antenna ports are allocated, the CSI-RSs are allocated to the 8th and 9th symbols (symbol No. l=7 and 8), wherein each CSI-RS for every two antenna ports is allocated to the same RE while being discriminated from each other by an orthogonal code and neighbor CSI-RS allocated REs in the frequency axis are spaced by an interval of three REs.

Abstract: A method includes: determining a CS parameter which implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of one or more User Equipments (UEs), and transmitting the determined CS parameter to the one or more UEs, wherein the orthogonality-related information comprises an Orthogonal Cover Code (OCC) indicated by the CS parameter, the orthogonality allocation rule is determined as a uniform scheme or a non-uniform scheme according to a set with at least one element to which the CS parameter belongs, if the non-uniform scheme is applied as the orthogonality rule, determining the at least one element as the CS parameter of the UE if the UE is in an SU-MIMO (Single User Multiple Input Multiple Output) state, and if the uniform scheme is applied as the orthogonality rule, determining the at least one element as the CS parameter of the UE if the UE is in an MU-MIMO (Multiple User Multiple Input Multiple Output) state.

Abstract: In a wireless communication system, a base station, a resource allocation device and method, a user equipment, a resource allocation reception device and method that utilize encoding and decoding techniques for transmitting through communication systems with uplinks and downlinks, the resource allocation information used to share transmission resources in a wireless communication system.

Abstract: Disclosed is a wireless communication system including an apparatus and a method for feeding back channel information of a User Equipment (UE); a Base Station (BS) for receiving channel information of a UE and for communicating with the UE; and a communication method of the BS which can dynamically switch between Single-User Multiple-Input Multiple-Output (SU-MIMO) and Multiple-User Multiple-Input Multiple-Output (MU-MIMO) access schemes.

Abstract: A multi-antenna wireless transmission apparatus for multiple receiving terminals includes a channel characteristic acquiring unit to acquire characteristic parameters of a wireless transmission channel between a transmitting party antenna and a receiving party antenna, a coefficient calculator to use the characteristic parameters of the wireless transmission channel to calculate coefficients configured such that the transmitting party sets a ratio of received power for a transmission signal at the receiving party to intensity of interference and noise of the transmission signal, and a precoder to multiply an input signal by a matrix whose elements are the coefficients calculated by the coefficient calculator and to output an output signal. The output signal is to be transmitted from the transmitting party antenna to the receiving party antenna.