Patent ID: 8054919

Claim:
A method of generating training sequence codes (TSCs) in a communication system, the method comprising the steps of: encoding packet data; multiplexing a header to the encoded packet data; modulating the multiplexed data; inserting TSCs into the modulated data; and transmitting the modulated data including the TSCs, wherein the TSCs are generated by: generating a pair of sequences A and B that have cross-correlation properties and autocorrelation properties; generating a protection sequence A′ by copying last L symbols of the sequence A; generating a protection sequence B′ by copying last L symbols of the sequence B; generating sequences with a structure of A′ AB′ B as TSC candidates by using the generated sequences A, B, A′, and B′; and selecting at least one of the TSC candidates by evaluating signal-to-noise ratio (SNR) degradation of the TSC candidates, wherein the cross-correlation properties are determined according to joint channel estimation.