Patent ID: 7272165
Filing Date: 2007-09-18
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A channel estimation method for wireless local area network (WLAN) systems, which comprises the steps of: (a) receiving a preamble message of a spread spectrum signal with a sequence and despreading the preamble message into a plurality of symbol signals, each of the symbol signals containing a plurality of discrete signals; (b) determining a peak sign assignment for each of the symbol signals; (c) establishing a plurality of data windows for each symbol signal using the discrete signal of any starting point; (d) multiplying a discrete value associated with each of the discrete signals of each data window by the peak sign assignment associated with the data window, and accumulating and temporarily storing the product to a first data frame; (e) repeating step (d) for each of the following discrete signals, accumulating and temporarily storing the products to a second through Nth data frame; (f) computing the accumulated products in the data frames and determining a data frame with the maximum accumulation; and (g) computing a channel signal according to the data frame with the maximum accumulation.