Signal model and receiver algorithms for a transmit-reference ultra-wideband communication system

Dang, Quang Hieu; Trindade, A.; Veen, Alle-Jan van der; Leus, Geert

doi:10.1109/jsac.2005.863828

Cited by 28 publications

(17 citation statements)

References 14 publications

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“…We find it convenient and reasonable to model the NBI at the UWB receiver front-end as a single tone sinusoidal signal [11]. Hence,…”

Section: Interfern Suppresion Based On Tr-uwb System Using Acr With Nbimentioning

confidence: 99%

Interference Cancellation Schemes in UWB Systems Used in Wireless Personal Area Network based on Wavelet based Pulse Spectral shaping and Transmitted Reference UWB using AWGN Channel Model

Das¹,

Das²

2010

IJCA

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For high data rate ultra wideband communication system, performance study of mutual interference such as suppression of interference signal by performing pulse shaping from UWB to other narrowband system using wavelet technique and reduction of interference from other narrowband system to UWB system in conjunction with Transmitted-Reference (TR-UWB) signaling scheme with adaptive receivers is attempted in this paper. The TR-UWB signal using wavelet is based on multi-resolution technique to avoid its interference to other wireless systems. Ultra Wideband (UWB) wireless systems supposed to coexist with other spectrally overlapping wireless systems such as narrowband interference (NBI), multiple NBI and wideband interference allocated from 3.1GHz to 10.6GHz. So suppression of UWB from other system can be performed by using Eigen value decomposition using wavelet technique. Mutual interference degrades the performance of the TR-UWB system using auto-correlation receivers (AcR). In this paper adaptive receiver (using notch filter) is used for detection and suppression of mutual interference (narrowband and wideband signal) which do not require modification of the narrowband system. The bit error rate performances are investigated using MATLAB simulation under AWGN channel model. At 10-2 BER floor, TR-UWB using adaptive receiver with NBI simulations under AWGN provides a more than of 6 dB SNR improvement than that of TR using AcR receiver with NBI. The performance degrades when coexistence of multiple NBI and wideband interference wireless system with UWB system is applied using the same receiver.

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“…We find it convenient and reasonable to model the NBI at the UWB receiver front-end as a single tone sinusoidal signal [11]. Hence,…”

Section: Interfern Suppresion Based On Tr-uwb System Using Acr With Nbimentioning

confidence: 99%

Interference Cancellation Schemes in UWB Systems Used in Wireless Personal Area Network based on Wavelet based Pulse Spectral shaping and Transmitted Reference UWB using AWGN Channel Model

Das¹,

Das²

2010

IJCA

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“…The output of multiplier of the correlator consists of signal regions and noise-only regions, as illustrated by (13). However, the integration is performed only overs the signal regions.…”

Section: B Doublet-shift Tr Receivermentioning

confidence: 99%

“…In [12], a generalized model of TR scheme which combines the conventional TR and differential TR techniques has been presented to increase the power efficiency and improve bit error probability (BEP). A signal processing model for a TR UWB system is proposed in [13], for the case where both pulses in a doublet are more closely spaced than the length of the impulse response. [14] has also presented a dual pulse transmission and auto-correlation detection scheme for UWB communications.…”

Section: Introductionmentioning

confidence: 99%

A Doublet-Shift Transmitted Reference Scheme for Ultra-Wideband Communication Systems

Khan

Nordberg

Claesson

2007

2007 IEEE International Conference on Ultra-Wideband

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Abstract-The transmitted reference (TR) scheme has gained attention for ultra-wideband (UWB) communications as it bypasses the complex task of channel estimation and provides a simple receiver structure. However, the low-complexity detection in this scheme is achieved at the expense of a loss in performance. To this end, this paper proposes a doublet-shift TR (DsTR) signaling and detection scheme to improve the performance of conventional TR impulse radio UWB system. The performance of the proposed scheme is compared with conventional TR signaling scheme in terms of uncoded bit error rate (BER). The simulation results validate that the doublet-shift TR scheme achieves about 1.5 − 2 dB better performance than the conventional TR scheme. The DsTR scheme does not require extra energy and still has the low-complexity.

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“…Analog UWB receivers, such as analog Rake (e.g., [1]) and Transmitted Reference (TR) systems [2], [3], avoid the need for high speed Analog-to-Digital Converters (ADC), but come at the cost of performance degradation and limited flexibility. Rake receivers cannot achieve the optimal bit error rate (BER) of the matched filter receiver since the number of fingers must be small for design complexity reasons [4], [5], whereas typical UWB channels present a high number of resolvable paths.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a flexible subsampling receiver for pulsed UWB signals

Vanderperren

Dehaene

Leus

2009

IEEE Trans. Wireless Commun.

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Abstract-This paper presents a flexible digital receiver for pulsed Ultra-Wideband (UWB) communications which is sampling below Nyquist rate. This receiver can trade demodulation performance for sampling rate, i.e. power consumption. The bit error rate for pulse amplitude and pulse position modulations is evaluated in AWGN and typical UWB channels. The performance of several types of equalizer is compared, taking into account their implementation complexity. A suboptimal but implementation efficient Minimum Mean-Square Error (MMSE) equalizer which reaches performances similar to the ideal MMSE equalizer is proposed. The impact of imperfect knowledge of the propagation channel and signal-to-noise ratio, due to the limited number of training symbols, on the performance of the receiver is assessed. Finally, the receiver architecture and implementation cost are discussed. The proposed subsampling receiver provides an attractive alternative to classical architectures based on correlation with a template.

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Signal model and receiver algorithms for a transmit-reference ultra-wideband communication system

Cited by 28 publications

References 14 publications

Interference Cancellation Schemes in UWB Systems Used in Wireless Personal Area Network based on Wavelet based Pulse Spectral shaping and Transmitted Reference UWB using AWGN Channel Model

Interference Cancellation Schemes in UWB Systems Used in Wireless Personal Area Network based on Wavelet based Pulse Spectral shaping and Transmitted Reference UWB using AWGN Channel Model

A Doublet-Shift Transmitted Reference Scheme for Ultra-Wideband Communication Systems

Performance analysis of a flexible subsampling receiver for pulsed UWB signals

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