Patent ID: 8483235
Filing Date: 2013-07-09
Classification: H04B

Abstract:
1. A communication method of a transmitter for channel estimation in a Multiple Input Multiple Output (MIMO) wireless communication system having N receiving antennas, comprising: generating a preamble interval having a short training field for compensating for a carrier frequency offset, wherein the short training field comprises a predetermined pattern iterated N−1 times and a reverse predetermined pattern positioned after the (N−1)th predetermined pattern on a time domain, wherein the short training field further comprises a guard interval at a front of the short training field, wherein the guard interval comprises at least one predetermined pattern and at least one reverse predetermined pattern positioned after the at least one predetermined pattern, wherein the predetermined pattern is formed of a first bit sequence, and wherein the reverse predetermined pattern is formed of the first bit sequence arranged in a reverse order; and transmitting a packet having the preamble interval.