A Bit Allocation Algorithm for MB-OFDM UWB with Spectral Mask Constraint

As a competitive solution to the short-range high data-rate communication, Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra-wideband (UWB) technique can obtain further performance improvement with the use of adaptive resource allocation schemes. In this paper, an incremental bit allocation algorithm is proposed for MB-OFDM UWB system, which aims at minimum bit error rate (BER) under constant rate constraint while complying with the spectral mask limit. The BER performance improvement and transmission distance extension due to this algorithm is evaluated by employing a simulation model based on MB-OFDM proposal.