Efficient Wavelet Packet Modulation for Wireless Communication

Gautier, Matthieu; Arndt, Marylin; Liénard, Joêl

doi:10.1109/aict.2007.21

Cited by 35 publications

(9 citation statements)

References 13 publications

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“…However, OFDM suffers from certain drawbacks including high Peak-to-Average Power Ratio (PAPR) and wastage of transmission resources due to the use of Cyclic Prefix (CP). In light of these facts, several alternatives to OFDM have been proposed, with Wavelet Packet Modulation (WPM) as one potential candidate [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

BER Performance Investigation of WPM with Unknown CSI Using Time-Domain MMSE Equalization

2019

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Wavelet Packet Modulation (WPM) is an emerging Multi-Carrier Modulation (MCM) technique regarded as a potential alternative to widely used Orthogonal Frequency Division multiplexing (OFDM). OFDM uses Cyclic Prex (CP) and can rely on one-tap equalization. Since WPM has overlapping symbols in the time domain, equalization cannot depend on the use of CP. This paper considers time-domain Minimum Mean-Square Error (MMSE) equalization for WPM with unknown Channel State Information (CSI), where equalizer filter coefficients are computed using known training sequences. The infuence of the transmission overhead due to training sequences on the Bit Error Rate (BER) performance is investigated considering quasistatic time-varying Rayleigh fading channels. Numerical results from computer simulations show that, with moderate overhead due to training sequences, BER performances are comparable with the case of known CSI. Furthermore, WPM is compared to OFDM with one-tap equalization, and is shown to provide better BER performances as compared to OFDM. Finally, this paper demonstrates improvement in Peak-to-Average Power Ratio (PAPR) of the transmitted signal using subcarrier combining for WPM in heterogeneous communication environments, where low-rate and high-rate devices share the same transmission resources.

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Section: Introductionmentioning

confidence: 99%

BER Performance Investigation of WPM with Unknown CSI Using Time-Domain MMSE Equalization

2019

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“…In order to design a multicarrier modulation with a significant time and frequency localization properties, a given solution is to use the wavelet theory [4]. 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).…”

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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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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“…However, the waveforms after windowing still have relatively high energy in their first sidelobe [2]. Wavelet packet based multi-carrier modulation (WP-MCM) is proposed as an alternative modulation scheme with better spectral containment [3], [4]. However, the tree structure filter bank results in mirror image spectral properties, which makes it difficult to implement the frequency-division duplex (FDD) required for a standard DSL application [5].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Cosine Modulated Filter Bank for Narrowband RFI

Liang

Eliezer

Rajan

2011

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

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Abstract-An optimization scheme is developed for a cosine modulated perfect-reconstruction (PR) filter bank that is tailored to mitigate the effects of narrowband radio frequency interference (RFI). The conventionally used optimization criterion for bandpass filtering is to maximize the sidelobe attenuation by minimizing the stopband energy and minimizing the maximum stopband ripple. The proposed optimization scheme is designed particularly to combat RFI with completely known or partially known statistics. Simulation results for the scenario of strong narrowband RFI show that the proposed optimization scheme offers about 14% improvement in the system's data throughput when compared to the traditional schemes.

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Efficient Wavelet Packet Modulation for Wireless Communication

Cited by 35 publications

References 13 publications

BER Performance Investigation of WPM with Unknown CSI Using Time-Domain MMSE Equalization

BER Performance Investigation of WPM with Unknown CSI Using Time-Domain MMSE Equalization

PAPR analysis of MB-OWDM UWB signal in wireless communication

Optimization of Cosine Modulated Filter Bank for Narrowband RFI

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