Antenna switching apparatus based on spatial modulation

An antenna switching apparatus based on spatial modulation, the antenna switching apparatus comprising:

• a delay analyzer configured to receive a transmission signal output from each of a plurality of switches connected to a plurality of antennas to calculate delay information for synchronizing switching control signals applied to the respective switches of the plurality of switches, the delay analyzer further comprising:
• a combiner configured to combine the transmission signals output from the respective switches;
• a receiver configured to down-convert the combined transmission signal;
• a filter configured to extract only a noise signal from the down-converted signal;
• and
• a delay controller configured to calculate delay information on the basis of the noise signal output from the filter;
• and
• a delay adjuster configured to synchronize the switching control signals and apply the synchronized switching control signals to the respective switches according to the calculated delay information.

An antenna switching apparatus based on spatial modulation, the antenna switching apparatus comprising:

• a plurality of antennas;
• a control signal generator configured to generate a plurality of switching control signals;
• a plurality of switches installed at respective front stages of the plurality of antennas, and configured to switch on to apply a transmission signal to the respective antennas according to the respective switching control signals;
• and
• a delay analyzer configured to receive the transmission signal output from each of the plurality of switches to calculate delay information for synchronizing the switching control signals applied to the respective switches, wherein
• the delay analyzer comprises:
• a combiner configured to combine the transmission signals output from the respective switches;
• a receiver configured to down-converter the combined transmission signal;
• a filter configured to extract only a noise signal from the down-converted signal;
• and
• a delay controller configured to calculate delay information on the basis of the noise signal output from the filter, and supply the delay information to the delay adjuster.