Low Complexity Rake Receivers in Ultra-Wideband Channels

Cassioli, Dajana; Win, Moe Z.; Vatalaro, Francesco; Molisch, Andreas F.

doi:10.1109/twc.2007.348323

Cited by 130 publications

(79 citation statements)

References 42 publications

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“…The most suitable channel models for practical UWB applications are the low-frequency (LF) and the high-frequency (HF) models [6]. The former was accepted by the IEEE 802.15.4a standardization group and is appropriate for applications below 1 GHz.…”

Section: Channel Modelsmentioning

confidence: 99%

“…Next, we evaluate the performance of the proposed receivers over the LF, HF and Rayleigh channels. Details concerning these UWB channel models can be found in [6]. In the following, the main characteristics of these models are given for the reader's convenience.…”

Section: Channel Modelsmentioning

confidence: 99%

“…The comparison is made in terms of the average Bit Error Probability (ABEP) and the number of combined branches. As mentioned above, we consider realistic UWB channels, and we follow the semi-analytical evaluation of the BEP that was presented in [6]. The maximum number of combined paths for the NT-GSC, MS-GSC and the proposed receivers is set to 16.…”

Section: Performance Analysismentioning

confidence: 99%

“…Recently, partial Rake (PRake) receiver was proposed in [6]. PRake combines only the first arriving L p paths out of the available resolvable MPCs, and therefore requires only synchronization, but not full channel estimation.…”

Section: Introductionmentioning

confidence: 99%

“…By evaluating the error performance of the ASRake and APRake receivers in realistic UWB channels [6], it is shown that the improved adaptation leads to important savings in power and computational resources. Thus, the contribution of this work is twofold.…”

Section: Introductionmentioning

confidence: 99%

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Increasing the Efficiency of Rake Receivers for Ultra-Wideband Applications

Doukeli

Lioumpas

Karagiannidis

et al. 2010

Wireless Pers Commun

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Abstract-In diversity rich environments, such as in UltraWideband (UWB) applications, the a priori determination of the number of strong diversity branches is difficult, because of the considerably large number of diversity paths, which are characterized by a variety of power delay profiles (PDPs). Several Rake implementations have been proposed in the past, in order to reduce the number of the estimated and combined paths. To this aim, we introduce two adaptive Rake receivers, which combine a subset of the resolvable paths considering simultaneously the quality of both the total combining output signal-to-noise ratio (SNR) and the individual SNR of each path. These schemes achieve better adaptation to channel conditions compared to other known receivers, without further increasing the complexity. Their performance is evaluated in different practical UWB channels, whose models are based on extensive propagation measurements. The proposed receivers compromise between the power consumption, complexity and performance gain for the additional paths, resulting in important savings in power and computational resources.

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Section: Channel Modelsmentioning

confidence: 99%

Section: Channel Modelsmentioning

confidence: 99%

Section: Performance Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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