Comparison of time and frequency domain interpolation implementations for MB-OFDM UWB transmitters

This paper investigates the effect of time-domain (TD) and frequency-domain (FD) interpolation on the performance of a Multi-Band (MB) Orthogonal Frequency Division Multiplexing (OFDM) Ultra-Wideband (UWB) system. We introduce a FD interpolator implemented by a radix-8 512-point IFFT architecture for applications on MB-OFDM UWB transmitters. For the specific application where the interpolation factor is fixed to four, the FD interpolator outperforms the TD interpolator implemented with digital low-pass FIR filters in terms of computational complexity. On the other hand simulation results show that FD implementation degrades the overall system performance for certain UWB channels.


Published in:
Proceedings of 2010 IEEE International Symposium on Circuits and Systems (ISCAS 2010)
Presented at:
2010 IEEE International Symposium on Circuits and Systems (ISCAS 2010), Paris, France, May 30 -June 2 2010
Year:
2010
Laboratories:




 Record created 2010-11-08, last modified 2018-03-17

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