Performance Comparison of UWB Pulse Modulation Schemes under White Gaussian Noise Channels

Abstract

In this paper, and for the first time, the performance of various ultra wideband pulse modulation schemes are discussed and compared in terms of narrowband interference robustness, symbol error rate, system complexity, data rate, and maximum transmit power with respect to transceiver distance and channel capacity. The channel model is the UWB IEEE 802.15.3a multipath indoor channel model under additive white Gaussian noise. The transmit power was evaluated by integrating the fifth derivative of the power spectrum density of the Gaussian pulse over the whole bandwidth.

Efficient narrowband interference cancellation in ultra‐wide‐band rake receivers

“…A received multi-path signal r(t) consists of the superposition of several attenuated, delayed and eventually distorted replicas of a transmitted waveform [1]. There are different strategies for exploiting diversity that can be adopted such as selection diversity, equal gain combining and maximal ratio combining (MRC) methods [18].…”

“…However, some key UWB receiver parameters, such as narrowband interference (NBI), still need more investigation for optimum performance, especially in the presence of colour noise. In fact, NBI plays a crucial role in UWB receiver performance since it reduces the receiver signal-to-noise ratio (SNR), thus directly affecting the probability of error and consequently, the system capacity [1].…”

“…In terms of pulse modulation, because of its smooth power spectrum density (PSD), limited number of discrete components and relatively low noise sensitivity, SER and power consumption, the 4-pulse position modulation (4-PPM) was retained, along with the fifth derivative of a Gaussian pulse as pulse shape [1,2]. We also introduced a modified indoor UWB IEEE channel model [9,10], which considers statistical path loss for ENLOS and the effects of pulse shape and distribution in different environments to efficiently predict the overall performance of UWB systems.…”