UWB receiver performance comparison

The BER performance of the imperfect matched filter (IMF) is compared to the BER performance of the transmit reference (TR) receiver. Imperfect channel estimation is taken into account. The resulting BER performance of the IMF receiver is compared to the BER performance of the TR receiver, which has been modified compared to the original concept with regards to: (a) time gating, i.e. integration is just performed in the time interval where significant pulse energy is received; (b) 2PAM/M-PPM modulation; and (c) optional reference pulse averaging. Results show, that both receiver types can reach the uncoiled target BER of 10^-2 in all environments investigated. However the IMF receiver outperforms the TR receiver by about 3 dB in LOS and by about 7 dB in NLOS. For the IMF receiver, the required E_b/N₀ ratio to achieve the target BER strongly depends on the number of filter coefficients. More details can be found in the final D5.3b deliverable of the UWB work package of the European research project whyless.com (Physical layer architecture and performance, 2003).