A high-speed, on-chip implementation of Teager Kaiser operator for in-band interference rejection

Godycki, Waclaw; Dokania, Rajeev; Wang, Xiao; Apsel, Alyssa

doi:10.1109/asscc.2010.5716577

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…Unfortunately, because the TKO includes both the first-and the second-order derivatives, analog implementation for the TKO that can process IR-UWB signals is also difficult. To the best of our knowledge, [8] is the only paper on analog TKO implementation in technical literatures open to public, and no commercial off-the-shelf analog TKO is available.…”

Section: Introductionmentioning

confidence: 97%

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Nonlinear Blind Narrowband Interference Mitigation for Energy Detection Based UWB Receivers

Nie

Chen

et al. 2012

IEEE Commun. Lett.

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In this paper, a blind narrowband interference (NBI) mitigation technique using the combination of a square law (SL) device and a band pass filter (BPF) is proposed for energy detection (ED) based ultra-wideband (UWB) receivers. Both theoretical analysis and computer simulations show that without requiring any prior knowledge about the NBI, the SL technique can considerably improve signal-to-interference ratio of the received UWB pulses and hence allows ED-based UWB receivers achieve much better bit error rate. Furthermore, the proposed SL technique has the same NBI mitigation performance as the Teager-Kaiser operator (TKO) technique. Unlike TKO, there are many commercial off-the-shelf SL devices are available for IR-UWB applications. Thus, the proposed SL technique is a simple, implementable, and highly effective blind NBI mitigation technique for ED-based IR-UWB receivers.Index Terms-Ultra-wideband, energy detection, narrowband interference, Teager-Kaiser operator, square law device.

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Section: Introductionmentioning

confidence: 97%

“…In this technique, first the NBI is shifted to a frequency band close to direct current (DC) by the TKO, and then removed by the HPF. Since this technique does not need any prior knowledge of the NBI, it attracts an increasing attention [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Blind Narrowband Interference Mitigation for Energy Detection Based UWB Receivers

Nie

Chen

et al. 2012

IEEE Commun. Lett.

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“…However, bit-error rate (BER) will increase when a signal threshold is not well defined under the presence of noise or interferes. In fact, the wideband channel can be easily corrupted by narrowband interferers from other wireless standards [11]. Energy efficient IR-UWB transceiver chipsets with various architectures have been recently reported [12]- [20].…”

Section: Introductionmentioning

confidence: 99%

A Gated FM-UWB System With Data-Driven Front-End Power Control

Zhou

Qiao

Rui

et al. 2012

IEEE Trans. Circuits Syst. I

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This paper presents a frequency modulated ultra-wideband (FM-UWB) transceiver system with RF submodules gated by a data-driven control signal. With the control signal, intermittent operation of key building blocks such as a VCO in the transmitter and a wideband FM demodulator in the receiver is realized. To enable an effective dynamic power control, the transmitter generates higher subcarrier frequency and modulation index than conventional FM-UWB transmitters by utilizing an 8-modulo fractional-N PLL in which a triangular waveform is generated by a relaxation VCO. In the receiver, an envelope detector monitors the presence of incoming signal and enables the data-edge-triggered power control for a wideband FM demodulator and other blocks. A prototype 3.5-4.1 GHz FM-UWB transceiver for on-chip wireline testing is implemented in -m CMOS. Experimental results show that the proposed gated FM-UWB system successfully demodulates the FSK information, achieving nearly 53% power saving with the data-driven power control enabled.

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“…Furthermore, since the input signal to the TEO circuit is fairly band-limited (11)(12)(13)(14)(15)(16) to the Sleep spindle frequency range, the low pass filter nearly constant group delay of 4 ms with a 1% variation across the mentioned bandwidth is acceptable.…”

Section: A Teo and Post-processing Blockmentioning

confidence: 99%

“…3. Similar to the approach in [15], each of the delay elements in (1b) has been modeled by a low pass filter (LPF 1 and LPF 2 in Fig. 3).…”

Section: A Teo and Post-processing Blockmentioning

confidence: 99%

An Ultralow-Power Sleep Spindle Detection System on Chip

Iranmanesh

Rodriguez‐Villegas

2017

IEEE Trans. Biomed. Circuits Syst.

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Abstract-This paper describes a full system-on-chip to automatically detect sleep spindle events from scalp EEG signals. These events, which are known to play an important role on memory consolidation during sleep, are also characteristic of a number of neurological diseases. The operation of the system is based on a previously reported algorithm which used the Teager Energy Operator (TEO), together with the Spectral Edge Frequency (SEF50) achieving over 70% sensitivity and 98% specificity. The algorithm is now converted into a hardware analog based customized implementation in order to achieve extremely low levels of power. Experimental results prove that the system, which is fabricated in a 0.18 µm technology, is able to operate from a 1.25 V power supply consuming only 515 nW, with an accuracy which is comparable to its software counterpart.

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A high-speed, on-chip implementation of Teager Kaiser operator for in-band interference rejection

Cited by 9 publications

References 11 publications

Nonlinear Blind Narrowband Interference Mitigation for Energy Detection Based UWB Receivers

Nonlinear Blind Narrowband Interference Mitigation for Energy Detection Based UWB Receivers

A Gated FM-UWB System With Data-Driven Front-End Power Control

An Ultralow-Power Sleep Spindle Detection System on Chip

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