Iterative coexistence approaches for non-coherent multi-band impulse radio UWB

Narrow- and Broadband Interference Robustness for OOK/BPPM Based Energy Detection

“…A promising noncoherent UWB system suited for high data rate transmissions is multiband impulse radio UWB (MIR UWB) [4], [5], [6], [7]. Therein, extremely short pulses are given to the input of an analog bandpass filterbank covering the available spectrum.…”

MIRA – Physical Layer Optimisation for the Multiband Impulse Radio UWB Architecture

“…For this reason there is an increased interference potential from a possible large number of radio systems operating in the same frequency domain. As shown in [12] the impact of interference can result in a significant decrease of the bit error rate (BER) performance of the MIR-UWB system. To maintain system performance, the following section gives a short overview of various coexistence-based approaches with respect to an efficient and easy-to-realise interference mitigation.…”

“…Performance analysis [12] demonstrates the high capability of both iterative coexistence methods in presence of multiple interferers having the same or different interference powers (Fig. 22).…”

“…Afterwards a binary decision has to be done for all received energy values x j,i , j = 1,...,m 0 , i = 1,...,N sub , which are logged in band plan L.I n this context, we define an energy cell as interfered if x j,i ≥ ǫ th . Since the main drawback of the global coexistence approach is its reduced efficiency in case of simultaneously operating broad-or narrowband interference, it should be improved by using iterative coexistence methods [12]. In a global iterative method (coexistence approach 2, left side of Fig.…”

“…There does not exist a closed form for the distribution function in general. But for D ∈ Z + it can also be solved in closed form with the help of the Marcum-Q function (12):…”