UWB radars based on wavelet packet OFDM signals

Mohseni, Reza Moosavi; Sheikhi, A.; Shirazi, Mohammad Ali Masnadi

doi:10.1109/icuwb.2008.4653358

Cited by 16 publications

(4 citation statements)

References 10 publications

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“…The basis functions of wavelet packets are well localized in both time and frequency domains and they can be built by using quadrature mirror filter (QMF) pairs ) (n h and ) (n g , satisfying the following conditions [6].…”

Section: Wavelet Packet Modulationmentioning

confidence: 99%

“…A technology in which wavelet transforms/wavelet packets could be used to modulate data into a number of subchannels is called orthogonal wavelet division multiplex (OWDM). OWDM using the discrete wavelet packet transform is a multiplexing transmission method in which data is assigned to wavelet subbands having different time and frequency resolutions [5][6]. The main advantage of using OWDM is that it is a very flexible system.…”

Section: Introductionmentioning

confidence: 99%

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PAPR analysis of MB-OWDM UWB signal in wireless communication

Murthy

Rao

2010

IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS

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Multi-band orthogonal frequency division multiplexing (MB-OFDM) is an efficient approach for ultrawideband (UWB). However, MB-OFDM is characterized by poor spectral properties that cause a high degree of spectral leakage and cyclic prefix symbol extension leads to a reduction of the bandwidth efficiency. Multicarrier transmission schemes without cyclic symbol extension require a good time-frequency localization of the elementary pulse. To this end, multi-band orthogonal wavelet division multiplexing UWB (MB-OWDM UWB) has been proposed as an alternative to the MB-OFDM UWB. However, any multi carrier signals with large number of subchannels like MB-OFDM UWB and MB-OWDM UWB signals have large Peak-to-Average Power Ratio (PAPR). Hence, in this paper, PAPR of MB-OFDM UWB and MB-OWDM UWB signals have been analyzed by using computer simulations. The Complementary Cumulative Distribution function (CCDF) and Bit Error Rate (BER) are used as performance measures in this evaluation.

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Section: Wavelet Packet Modulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

PAPR analysis of MB-OWDM UWB signal in wireless communication

Murthy

Rao

2010

IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS

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“…However, studies on WBW are still limited although its potential is dramatic. Mohseni [12] generated ultra-wideband (UWB) radar waveforms via wavelet packet based on orthogonal frequency division multiplexing (OFDM) radar signals.…”

Section: Introductionmentioning

confidence: 99%

Wavelet-based radar waveform for moving targets detection

Cao

Zheng

Ewing

2014

2014 IEEE Radar Conference

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In a previous paper by the authors, a wavelet-based waveform (WBW) is described which can suppress range sidelobes for static targets effectively. In this paper, we describe the use of WBW in speed detection via Doppler frequency. We compare WBW with conventional waveform using linear frequency modulation (LFM) for both range and speed detections. Analysis and simulation results show that WBW achieves higher resolution in both range and speed detections over LFM. Further study shows that WBW can be applied in SAR to acquire high resolution image.

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“…Recently, wavelet filter banks have also been designed for communication systems with the advantages such as transform flexibility, lower sensitivity to channel distortion and interference, and better utilisation of spectrum. It was shown that the wavelet transform with longer basis functions can offer a higher degree of sidelobe suppression in MCM systems compared with OFDM [14–16]. These characteristics have made wavelet‐based communications as a significant candidate for 5G heterogeneous networks.…”

Section: Introductionmentioning

confidence: 99%