Patent ID: 8134997
Filing Date: 2012-03-13
Classification: H04L

Abstract:
1. A preamble receiving apparatus, comprising: a receiving unit receiving from a transmitting apparatus a frame having a format which contains a preamble section and a margin section subsequent to the preamble section; and a reception processing unit detecting a preamble signal which is transmitted in the preamble section in the transmitting apparatus from the frame received by the receiving unit, wherein the reception processing unit includes: a correlation processing unit which defines, as a search section, a time having a predetermined starting point and which is equal to or shorter than the margin section, performs a correlating process operation related to a plurality of divided sections obtained by dividing the search section, the correlating process operation including calculating a correlation between the preamble signal and a known replica signal thereof, and creates a power profile for each of the plurality of divided sections; and a creating unit creating a coupled power profile by coupling the power profile for each of the divided sections to each other, and wherein the preamble signal is a random access preamble signal transmitted from a mobile terminal to a base station when the mobile terminal performs a random access to the base station.