Patent ID: 8014483

Claim:
A method of acquiring initial synchronization in impulse radio communication, the method comprising: at a transmitting apparatus: transmitting a transmitted reference preamble to a receiving apparatus, the transmitted reference preamble being formed with a plurality of identically shaped pulse pairs that are spaced by a predetermined time separation D, each identically shaped pulse pair being separated from neighboring identically shaped pulse pairs at equal pulse pair intervals; and transmitting a transmission data packet to the receiving apparatus after having transmitted the transmitted reference preamble to the receiving apparatus; and at the receiving apparatus: multiplying the transmitted reference preamble and a signal obtained by delaying the transmitted reference preamble by the predetermined time separation D, integrating a result of the multiplication per integration time that is equal to the pulse pair interval, detecting the transmitted-reference preamble based on a result of the integration, and generating a time mark; and starting to receive the transmission data packet using the generated time mark at the receiving apparatus.