In recent years, Ultra-Wideband (UWB) technology has emerged as a promising physical layer candidate for a wide range of wireless networks, especially due to its low operation power level and coexistence ability with traditional wireless systems. However, none of these physical layer realizations has specified the compatible operation among them (see, e.g., , , ). Therefore, the effective interoperability between asymmetric UWB transceivers needs to be considered for ubiquitous wireless communications. In this paper, we investigate the transceiver design for asymmetric UWB links with a single transmitter and a single receiver. We consider factors that can lead to the asymmetry between UWB transmitters and receivers such as different numbers of signal bands and different pulse rates. Our analysis reveals the similarity between the asymmetric UWB links and the conventional multiantenna systems. Then, MIMO signal processing approaches can be readily applied to achieve the optimal design in terms of channel throughput or bit error rate (BER). Analysis and simulations corroborate the effectiveness of our transceiver designs.
Bibliographical noteFunding Information:
Part of the results in this paper has been presented at the IEEE International Workshop on Signal Processing Advances in Wireless Communications, 2005, and the IEEE International Conference on Communications, 2008. This work was supported by the National Science Foundation under Grant ECS-0621879. Digital Object Identifier 10.1109/TCOMM.2010.06.070276 1IEEE 802.15.3a Task Group was officially disbanded in 2006, but the products are still being made in the industry.
- Asymmetric link
- Multi-input multi-output (MIMO)
- Multiband system
- Ultra-Wideband (UWB)