Frequency planning and synthesizer architectures for multiband OFDM UWB radios
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This work presents an analysis on frequency planning and synthesis for multiband (MB) orthogonal frequency-division multiplexing (OFDM) ultra-wideband (UWB) radios operating in the range of 3.1-10.6 GHz. The most important specifications for the frequency synthesizer in an MB-OFDM UWB transceiver are provided. A synthesizer architecture for an existing frequency plan is introduced along with a discussion on its performance and implementation. An alternative frequency plan and its corresponding synthesizer architecture are also proposed. It is shown how this modified frequency plan leads to a significant simplification in the synthesizer realization. The feasible performance of both synthesizer architectures is evaluated through macromodel simulations using realistic models for the building blocks. Finally, system-level simulation results showing the impact of synthesizer spurs on the bit error rate performance of an MB-OFDM UWB receiver in the presence of interferers are provided. The presented results and discussion provide valuable insight for the implementation of a 3.1-10.6-GHz UWB synthesizer. 2005 IEEE.
IEEE Transactions on Microwave Theory and Techniques
author list (cited authors)
Mishra, C., Valdes-Garcia, A., Bahmani, F., Batra, A., Sanchez-Sinencio, E., & Silva-Martinez, J.
complete list of authors
Mishra, C||Valdes-Garcia, A||Bahmani, F||Batra, A||Sanchez-Sinencio, E||Silva-Martinez, J