Design of a Multiband OFDM System for Realistic UWB Channel Environments

Batra, A.; Balakrishnan, J.; Aiello, G.; Foerster, J.R.; Dabak, A.G.

doi:10.1109/tmtt.2004.834184

Cited by 594 publications

(434 citation statements)

References 8 publications

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“…BW rel,Iout is shown as a function of Z rel in Figure 10. The solid line shows the effect of the source parallel resonator only Equation (24) and the performance of the whole matching circuit with several series resonator design parameter p values is shown with a dashed line according to Equation (25). For example, if both the input and source resonators have equal component values ( p = 1), BW rel,Iout is approximately 1.4 when Z rel is 1.…”

Section: Gain Definitions and Output Signal Current Of A Cg Stagementioning

confidence: 99%

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Analysis and design of common‐gate low‐noise amplifier for wideband applications

Kaukovuori¹,

Kaltiokallio²,

Ryynänen³

2008

Circuit Theory & Apps

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SUMMARYThe design of a common-gate (CG) LNA for the wideband applications is discussed in this paper. The effect of the different components in matching network is analyzed in detail. The design of a wideband input matching and output signal current for the input stage is presented. In addition, the effect of the matching network on the linearity and noise of a CG stage is studied. A design example is given to demonstrate the effectiveness of the presented theory.

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Section: Gain Definitions and Output Signal Current Of A Cg Stagementioning

confidence: 99%

“…Recently, integrated ultra-wideband (UWB) RF circuits have received considerable attention [24][25][26][27][28][29]. According to the Federal Communications Commission, the unlicensed frequency spectrum allocated for UWB systems is 3.1-10.6 GHz.…”

Section: Design Examplementioning

confidence: 99%

Analysis and design of common‐gate low‐noise amplifier for wideband applications

Kaukovuori¹,

Kaltiokallio²,

Ryynänen³

2008

Circuit Theory & Apps

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“…The critical limitation in the MB-OFDM system is their relatively short range (Qiyue et al, 2007;Batra et al, 2004). The desired range is around 20 m for 200 Mbits/s, it can be reduced in the presence of Doppler shift (Kabil et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

New Solution for Reducing Doppler Shift in the MB-OFDM System Over High Mobility Multipath Channel for V&I Communication

Kabil¹,

Elassali²,

Elbahhar³

et al. 2015

American Journal of Applied Sciences

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The MB-OFDM has been proposed as a good candidate to ensure Vehicle to Infrastructure communication (V&I). Fast moving vehicles present challenges for the proposed system especially for high mobility (250 km h −1 ). The main objective in this study is to study and investigate the impact of Doppler shift on the quality of transmitted/received signal in terms of Bit Error Rate (BER) and the transmission range. A new solution based on the association of Maximum Likelihood (ML) and Extended Kalman Filter (EKF) algorithmis proposed and computer simulations are performed to confirm the reduction of Doppler impact on the signal quality. Also it is shown that for high value of speed, the new solution can effectively improve the transmission range of the MB-OFDM system.

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“…Table I lists the gains in required 10 log 10 (Ē s /N 0 ) and percentage range increases on channel CM1 for various combinations of the extensions we have proposed. We assume a path loss exponent of d = 2, as in [6]. We can see that bit loading alone provides up to 47% increase in range, Turbo codes without loading provide a 71% increase, and the combination of Turbo codes and loading allows for a 106% increase in range.…”

Section: B With Loadingmentioning

confidence: 99%

“…1 The literature on Multiband OFDM systems and performance is surprisingly sparse. In [6] the authors present an overview of the Multiband OFDM system as well as performance results, but no comparison with information-theoretic limits is made. As an extension to the standard proposal, simplified Low-Density Parity-Check (LDPC) codes are considered in [7] in order to improve the power efficiency of the Multiband OFDM system for a subset of the proposed data rates.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Multiband OFDM Performance: Capacity-Approaching Codes and Bit Loading

Snow

Lampe

Schober

2005 IEEE International Conference on Ultra-Wideband

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Abstract-In this paper we consider Turbo and RepeatAccumulate (RA) codes as well as bit-loading as methods of enhancing the performance of Multiband OFDM, a frequency-hopping orthogonal frequency-division multiplexing system which is a strong contender for the physical layer IEEE standard for high-rate wireless personal area networks (WPANs) based on ultra-wideband (UWB) transmission. Our methodology consists of (a) development and quantification of appropriate information-theoretic performance measures, and (b) comparison of these measures with simulation results for the Multiband OFDM standard proposal as well as our proposed extensions. We find that the current Multiband OFDM standard proposal sufficiently exploits the frequency selectivity of the UWB channel, and that the system performs in the vicinity of the channel cutoff rate. By applying Turbo codes and a reduced-complexity clustered bit-loading algorithm the system power efficiency can be improved by over 6 dB at a data rate of 480 Mbps.

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Design of a Multiband OFDM System for Realistic UWB Channel Environments

Cited by 594 publications

References 8 publications

Analysis and design of common‐gate low‐noise amplifier for wideband applications

Analysis and design of common‐gate low‐noise amplifier for wideband applications

New Solution for Reducing Doppler Shift in the MB-OFDM System Over High Mobility Multipath Channel for V&I Communication

Enhancing Multiband OFDM Performance: Capacity-Approaching Codes and Bit Loading

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Design of a Multiband OFDM System for Realistic UWB Channel Environments

Cited by 594 publications

References 8 publications

Analysis and design of common‐gate low‐noise amplifier for wideband applications

Analysis and design of common‐gate low‐noise amplifier for wideband applications

New Solution for Reducing Doppler Shift in the MB-OFDM System Over High Mobility Multipath Channel for V&amp;I Communication

Enhancing Multiband OFDM Performance: Capacity-Approaching Codes and Bit Loading

Contact Info

Product

Resources

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New Solution for Reducing Doppler Shift in the MB-OFDM System Over High Mobility Multipath Channel for V&I Communication