Patent ID: 8897453

Claim:
A method comprising: assigning a first bit sequence of a first length to a first group of signaling bits; generating a first scrambling sequence and scrambling the first bit sequence with the first scrambling sequence; assigning a first orthogonal frequency division multiplexing symbol to the first scrambled bit sequence; and transmitting the first orthogonal frequency division multiplexing symbol as synchronization symbol of a data frame, wherein the first group of signaling bits indicates whether a next symbol comprises a second orthogonal frequency division multiplexing symbol as an additional synchronization symbol, wherein the second orthogonal frequency division multiplexing symbol comprises a second bit sequence scrambled by a second scrambling sequence and assigned to a second group of signaling bits, wherein the first and second bit sequences have the same length, wherein the first scrambling sequence is generated by a pseudo random binary sequence generator using a first initialization value, and wherein the second scrambling sequence is generated by the pseudorandom binary sequence generator using a second initialization value.