High data rate UWB performance with reduced implementation complexity

The bit error rate (BER) performance of the imperfect digital matched filter (IDMF) receiver in a typical multiuser scenario assuming LOS conditions for the terminals is investigated. Due to the extremely high processing requirements of the digital matched filter, it is assumed that for an implementation the number of bits as well as the number of filter coefficients has to be as low as possible introducing implementation loss. Furthermore imperfect channel estimation is taken into account. The resulting BER performance of the IDMF receiver is compared to the BER performance of the ideal matched filter receiver. Additionally the BER performance of a coded IDMF receiver, which applies sophisticated turbo forward error correction coding, is investigated. The results show that the IDMF receiver can reach the uncoded target BER of 10^-2 in the environment investigated and that this uncoded BER corresponds to a coded BER of less than 10^-6. For the IDMF receiver the required E_b/N₀ ratio to achieve the target BER strongly depends on the number of filter coefficients.