Patent ID: 8891690

Claim:
A method of transmitting a preamble for multiple channel estimation the method comprising: bisecting a channel estimation sequence having a length N to generate a first bisected sequence and a second bisected sequence; generating a first sequence by appending a Zero-padded Suffix (ZS) having a zero value to an end of the first bisected sequence; generating a second sequence by appending the ZS to an end of the second bisected sequence; allocating all of the first sequence to each of at least two symbols of a plurality of symbols in which the preamble is transmitted; allocating all of the second sequence to each of at least two symbols of the plurality of symbols; and transmitting the preamble, wherein: a transmitter is used to perform the method, and when the plurality of symbols include 6 symbols and the 6 symbols are sequentially a symbol 1, a symbol 2, a symbol 3, a symbol 4, a symbol 5, and a symbol 6, the first sequence is allocated to the symbols 1, 3, and 5 and the second sequence is allocated to the symbols 2, 4, and 6, and the symbols 1 and 4 are transmitted in a first frequency band, the symbols 2 and 5 are transmitted in a second frequency band, and the symbols 3 and 6 are transmitted in a third frequency band.