Patent ID: 7502310
Filing Date: 2009-03-10
Classification: H04L,H04W

Abstract:
1. A subchannel assigning method in an orthogonal frequency division multiplexing (OFDM) communication system having a total frequency band divided into a plurality of subcarriers, comprising the steps of: generating (Q−1) groups for n symbol periods by grouping the plurality of subcarriers for each of the n symbol periods into (Q−1)/n groups; generating L groups by grouping the (Q−1) groups; generating B subbands by grouping the L groups; detecting P subcarriers from each of (Q−1)/L groups among L/B groups included in a specific subband among the B subbands; and assigning the P subcarriers as an adaptive modulation and coding (AMC) subchannel to which an AMC scheme is applied, wherein each of the B subbands includes L/B groups and Q is a number of successive subcarriers included in each of the (Q−1) groups.