A Bayesian Approach to Adaptive RAKE Receiver

Wang, Ming; Han, Yubing; Sheng, Weixing

doi:10.1109/access.2017.2778700

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…A rake receiver is a key technology of a spread-spectrum communication system, and was proposed by Price and Green in 1958 [ 51 ]. The multipath signal energy is processed by the rake receiver to improve the signal-to-noise ratio (SNR) of the signal and reduce the fading probability [ 52 ]. Rake receivers are divided into multipath collection and combination.…”

Section: Receivermentioning

confidence: 99%

The Development and Progress of the UWB Physical Layer

Chen

et al. 2022

Micromachines

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Ultra-wideband (UWB) technology has been applied in many fields, such as radar and indoor positioning, because of its advantages of having a high transmission rate, anti-multipath interference, and good concealment. In the UWB physical layer, the transmitting link, including an encoder and a pulse generator, is used to improve the anti-interference ability of the signal, while the receiving link, including a receiver and a decoder, can correct the error signal. Therefore, the performance of the UWB physical layer can obviously affect the speed and quality of UWB signal transmission. In this paper, the structure and performance of the codec and transceiver of the UWB physical layer are introduced and compared. In addition, some typical architectures and features are summarized and discussed, which provides a valuable reference and suggestions for the design of the UWB physical layer. Finally, the outlook of the UWB physical layer is presented: its development direction mainly includes high speed, low power consumption, and fewer hardware resources.

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Section: Receivermentioning

confidence: 99%

The Development and Progress of the UWB Physical Layer

Chen

et al. 2022

Micromachines

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“…• Developing a mathematical model according to the modified receiver. In related works, many researches have investigated the problem of multipath channels [16][17][18][19][20][21] and several techniques have been proposed to deal with the multipath phenomenon. The authors in [16] have proposed a channel estimation scheme based on advanced mmWave lens antenna arrays.…”

Section: Introductionmentioning

confidence: 99%

“…The authors in [19,20] were interested in the channel estimation, where the UWB system performance was analysed through the conventional Rake receiver. In [21], the authors have proposed an adaptive Rake receiver that uses received signals to evaluate the channel parameters based on Bayesian theory.…”

Section: Introductionmentioning

confidence: 99%

Towards 5G wireless systems: A modified Rake receiver for UWB indoor multipath channels

Ghendir

Sbaa

Al-Sherbaz

et al. 2019

Physical Communication

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This paper presents a modified receiver based on the conventional Rake receiver for Ultra-Wide Band (UWB) indoor channels of femtocell systems and aims to propose a new solution to mitigate the multipath phenomenon. Furthermore, this work proposes an upgrade for the conventional Rake receiver to fulfill the needs of 5G wireless systems through a new concept named "hybrid femtocell" that joins UWB with millimeter wave (mmWave) signals. The modified receiver is considered to be a part of the UWB/mmWave hybrid femtocell system, where it is developed for confronting the indoor multipath channels and to ensure a flexible transmission based on an Intelligent Controlling System (ICS). Hence, we seek to exploit the circumstances when the channel is less complex to switch the transmission to a higher data rate through higher M-ary Pulse Position Modulation (PPM). Furthermore, an ICS algorithm is proposed and an analytical model is developed followed by performance studies through simulation results. The results show that using the UWB technology through the modified receiver in femtocells could aid in mitigating the multipath effects and ensuring high throughputs. Thus, the UWB based system promotes Internet of Things (IoT) devices in indoor multipath channels of future 5G.

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“…For individual branches of the system, the evaluation of ACF properties allows to determine the parameters that provide minimize the correlation of the received signals. In RAKE receiver [1][2][3] [4], knowing ACF properties is the basis for choosing the values of the coefficients and delays of each branch of the tapped delay line. Superposition of all signals from line ensures minimization of frequency selective fading.…”

Section: Introductionmentioning

confidence: 99%

Correlation properties of signal at mobile receiver for different propagation environments

Ziółkowski

Kelner

Nowosielski

2018

2018 14th International Conference on Advanced Trends in Radioelecrtronics, Telecommunications and Computer Engineering (TCSET)

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An issue of the parameter selection in various branches of a multi-antenna receiver system determines its effectiveness. A significant effect on these parameters are correlation properties of received signals. In this paper, the assessment of the signal correlation properties for different environmental conditions is presented. The obtained results showed that depending on the receiver speed, the adaptive selection of the delays in the different RAKE receiver branches provide minimization of the correlation between the signals. Particularly low levels of the signal correlation could be obtained in complex propagation environments such as urban and bad urban.

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A Bayesian Approach to Adaptive RAKE Receiver

Cited by 10 publications

References 23 publications

The Development and Progress of the UWB Physical Layer

The Development and Progress of the UWB Physical Layer

Towards 5G wireless systems: A modified Rake receiver for UWB indoor multipath channels

Correlation properties of signal at mobile receiver for different propagation environments

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