Performance of ultra-wideband communications with suboptimal receivers in multipath channels

Choi, Jung-Oh; Stark, W.E.

doi:10.1109/jsac.2002.805623

Cited by 535 publications

(301 citation statements)

References 39 publications

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“…In addition, the rate of the system can be increased. Whereas with proposed pulse-position modulation schemes the time between the repetition of two pulses is chosen to be sufficiently larger than the length of the CIR [10], focusing of power means that the repetition rate can be increased. At last, the spatial focusing that comes along with TR yields lower interference with other communication systems.…”

Section: Introductionmentioning

confidence: 99%

Application of time-reversal with MMSE equalizer to UWB communications

Strohmer

Emami²,

Hansen³

et al.

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04.

183

120

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Abstract-We propose to apply a technique called timereversal to UWB communications. In time-reversal a signal is precoded such that it focuses both in time and in space at a particular receiver. Spatial focusing reduces interference to other co-existing systems. Due to temporal focusing, the received power is concentrated within a few taps and the task of equalizer design becomes much simpler than without focusing. Furthermore, temporal focusing allows a large increase in transmission rate compared to schemes that let the impulse response ring out before the next symbol is sent. Our paper introduces time-reversal, investigates the benefit of temporal focusing, and examines the performance of an MMSE-TR equalizer in an UWB channel.

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Section: Introductionmentioning

confidence: 99%

Application of time-reversal with MMSE equalizer to UWB communications

Strohmer

Emami²,

Hansen³

et al.

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04.

183

120

View full text Add to dashboard Cite

show abstract

“…4 We analyze the signal-to-noise ratio(SNR) statistics at the combiner output and the bit error probability (BEP) of these Rake receivers using several widely used channel models. We consider both the IEEE 802.15.3achannel model, suitable for simulating UWB system that operate in the 3.1 −10.6 GHz range, and a channel model that is based on baseband pulse measurements [29]- [31].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Receivers Performance Using DFE and LE Equalizer for Uwb Communication System

Rajput¹,

Mandal²

2013

IOSRJEN

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-In This paper comparison results are presented for receiver used for UWB communication system .we have taken in to account of impact of all the parameter such as Rake fingers and equalization tap on the error performance and SNR. Rake receivers can be employed since they are able to provide multipath diversity .another aspect is to combate the inter-symbol-interference(ISI) ,this distorts the transmitted signal. A semi analytical approach and mote-carlo simulation are used to investigate the BER performance of receivers on IEEE 802.15.3a UWB channel mode. we observe that the performance of MMSE Time domain equliser with DFE is high as compared to other receiver.

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“…The optimal diversity combining scheme, in terms of performance, is the all-Rake (ARake) receiver which combines all the resolvable paths [1]- [4]. However the performance gain comes at the cost of power consumption and increased complexity of the utilized hardware, which are significant factors in environments with more than 100 MPCs, such in UWB applications [5].…”

Section: Introductionmentioning

confidence: 99%

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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Performance of ultra-wideband communications with suboptimal receivers in multipath channels

Cited by 535 publications

References 39 publications

Application of time-reversal with MMSE equalizer to UWB communications

Application of time-reversal with MMSE equalizer to UWB communications

Comparative Study on Receivers Performance Using DFE and LE Equalizer for Uwb Communication System

Increasing the Efficiency of Rake Receivers for Ultra-Wideband Applications

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