Abstract: The present invention relates to a multifunctional exercise equipment designed to allow a user to select and do various exercises, such as Pilates, fitness, and aerobic exercise, at low cost without the need for a large space at home or in the office.

Abstract: Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Abstract: A snake board apparatus includes: a front footboard part (100) on which a user puts one foot; a rear footboard part (200) on which a user puts the other foot; and a connecting part (300) connecting the front footboard part (100) and the rear footboard part (200) to each other.

Abstract: Provided is a frame assembly for a pistol. The frame assembly includes a lower frame having a grip formed at a lower side and an upper frame that is assembled on the lower frame and is assembled to a slide. The lower frame has a mounting projection which has a predetermined length and projects upward to a predetermined height in a direction to face the upper frame. The upper frame has a mounting groove which has a predetermined depth and into which the mounting projection is inserted in a direction to face the lower frame. The lower frame and the upper frame are assembled together by a screw which is fastened to penetrate the mounting groove and the mounting projection in this order from an inner side of the upper frame.

Abstract: Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Abstract: Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: Provided is a horse-riding bicycle in which a horse-riding effect is obtained by performing both normal driving and horse-riding driving (swinging driving), a user is allowed to simply switch a driving mode between a normal driving mode and a horse-riding driving mode, and a horse-riding driving structure is improved to have a simple structure so that a reduction in costs is achieved and, further, a switching operation between the normal driving mode and the horse-riding driving mode is smoothly performed.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: Provided is a horse-riding bicycle in which a horse-riding effect is obtained by performing both normal driving and horse-riding driving (swinging driving), a user is allowed to simply switch a driving mode between a normal driving mode and a horse-riding driving mode, and a horse-riding driving structure is improved to have a simple structure so that a reduction in costs is achieved and, further, a switching operation between the normal driving mode and the horse-riding driving mode is smoothly performed.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: Provided is a horse-riding bicycle in which a horse-riding effect is obtained by performing both normal driving and horse-riding driving (swinging driving), a user is allowed to simply switch a driving mode between a normal driving mode and a horse-riding driving mode, and a horse-riding driving structure is improved to have a simple structure so that a reduction in costs is achieved and, further, a switching operation between the normal driving mode and the horse-riding driving mode is smoothly performed.

Abstract: A modem chip communicates with a radio frequency (RF) chip and includes a digital interface configured to receive data including a plurality of samples from the RF chip based on digital communication. A logic block generates a frame synchronization signal based on a clock signal in the modem chip, provides the generated frame synchronization signal to the digital interface, and receives the plurality of samples in synchronization with the frame synchronization signal.

Abstract: Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Abstract: The skateboard capable of providing the self-propulsive force includes: a board main body; a center rotation portion which allows a user of the skateboard to change a direction of the skateboard with one foot put thereon; a first footrest portion which is provided on one side of the board main body with respect to the center portion and moves the board main body through a left and right reciprocating movement of the footrest; a second footrest portion which is provided on the other side of the board main body with respect to the center portion and moves the board main body through a left/right reciprocating movement of the footrest; and an elastic guide portion which is provided between the board main body and the wheel assemblies and guides left/right reciprocating movements of the support members.

Abstract: The skateboard capable of providing the self-propulsive force includes: a board main body; a center rotation portion which allows a user of the skateboard to change a direction of the skateboard with one foot put thereon; a first footrest portion which is provided on one side of the board main body with respect to the center portion and moves the board main body through a left and right reciprocating movement of the footrest; a second footrest portion which is provided on the other side of the board main body with respect to the center portion and moves the board main body through a left/right reciprocating movement of the footrest; and an elastic guide portion which is provided between the board main body and the wheel assemblies and guides left/right reciprocating movements of the support members.

Abstract: Disclosed are a method and apparatus for processing a transmission signal using a window function that changes a spectrum characteristic of a symbol. A transmission apparatus includes a symbol generator that generate a plurality of consecutive symbols, and a symbol windowing processor that is coupled with the symbol generator. The symbol windowing processor applies a first window function and a third window function that uses a difference between the first window and a second window, and changes a spectrum characteristic of each of the plurality of consecutive symbols, and processes neighboring symbols from among the plurality of consecutive symbols of which spectrum characteristics are changed, such that the symbols partially overlap one another.