Abstract
Pulse waveforms with overlapping yet orthogonal spectra are desired in high-rate multidimensional modulation and (carrier-free) orthogonal frequency division multiple access. To this end, we propose a digital filter solution to orthogonal pulse design for UWB impulse radios. A sequential design strategy is used in which the filter tap coefficients generating a new pulse are imposed with linear constraints to guarantee (spectral) orthogonality to all previously designed pulses. By formulating the overall pulse design problem as a set of convex sub-problems, a sequence of orthogonal waveforms can be efficiently obtained using convex optimization methods. Complying with a prescribed (FCC) spectral mask, our orthogonal waveforms enjoy high power utilization efficiency compared with other orthogonal waveform alternatives.
Original language | English (US) |
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Pages | 150-154 |
Number of pages | 5 |
State | Published - 2004 |
Event | 2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Lisbon, Portugal Duration: Jul 11 2004 → Jul 14 2004 |
Other
Other | 2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC |
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Country/Territory | Portugal |
City | Lisbon |
Period | 7/11/04 → 7/14/04 |