Reconfigurable highly energy efficient ultra-wideband impulse radio for body area networks and personal area networks

如今，身体和个人区域网络传感器在健身和健康、环境传感和军事等应用中变得无处不在。对于这样的应用，具有非常低的功耗并提供灵活和鲁棒的数据传输的通信系统的设计是非常有市场的解决方案。虽然传统的收发器已经被引入用于低功率操作，但是它们不像可以在非常窄的时间帧期间操作的脉冲无线电超宽带（IR-UWB）系统那样很好地适合于占空比。此外，IR收发器简单得多，并且可以潜在地提供非常高的传输效率。存在用于低功率通信的许多标准，并且允许信道可用性和数据速率的相当大的灵活性，使得在不同的通信链路下，不同的调制方案和发送的频谱形状可以是最佳的。因此，不仅可以改变它们的脉冲调制，而且还可以动态地调整它们的传输频率和带宽的收发器是非常期望的，因为它们允许在各种环境中进行鲁棒的通信，并且可以获得最佳的数据速率、频谱形状和功耗折衷。

Today, body and personal area network sensors are becoming ubiquitous in applications such as fitness and health, environmental sensing and military. For such applications, the design of communication systems that have very low-power consumption and provide flexible and robust data transmission is a highly marketable solution. While conventional transceivers have been introduced for low-power operation, they are not as well-suited to duty cycling as impulse-radio ultra-wideband (IR-UWB) systems which can operate during very narrow time frames. Moreover, IR transceivers are much simpler, and can potentially offer very high transmission efficiency. Many standards for low-power communication exist, and allow considerable flexibility on channel availability and data rates such that under different communication links, different modulation schemes and transmitted spectrum shapes may be optimal. Transceivers that can not only vary their pulse modulation, but also dynamically adjust their transmission frequency and bandwidth are thus highly desirable as they allow for robust communication in various environments and can attain the best data rate, spectrum shape and power consumption compromise.