High data rate MBOFCDM-UWB system for underground mine channel

Wireless communication in underground mine aims to provide high data rate for voice and data communication among mine workers. Ultra Wide Band (UWB) technology has been seen to fulfil the above requirements. In this paper, application of 2D spreading to Multi Band Orthogonal Frequency Division Multiplexing UWB (MBOFDM-UWB) system is attempted and resulting Multi Band Orthogonal Frequency and Code Division Multiplexing UWB (MBOFCDM-UWB) system has been analysed for underground mine channel. An extended closed form analytical expression for Bit Error Rate (BER) by incorporating power decay coefficient for clusters (Γ), power decay coefficient for pulse within clusters (γ_ch), cluster average arrival rate (Λ) and pulse average arrival rate (λ) within clusters is obtained for MBOFDM-UWB in Underground mine channel. The simulated BER results for MBOFDM-UWB system are observed to be nearly close to analytical results which validate the analysis. The simulation results have shown improvement in performance of MBOFCDM-UWB system as compare to MBOFDM-UWB system.