Equalization for DS-UWB Systems---Part II: 4BOK Modulation

Parihar, Ambuj; Lampe, Lutz; Schober, Robert; Leung, Cyril

doi:10.1109/tcomm.2007.902541

Cited by 17 publications

(11 citation statements)

References 19 publications

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“…The impulse radio UWB (IR-UWB) [3][4] has a transmission rate as low as Bluetooth, and confronts with the challenge of pulse generating and detection. The direct-sequence UWB (DS-UWB) [5]- [7] requires a signal processing speed in chip level, and very hard for RAKE to collect multipath energy. The multi-band orthogonal frequency division multiplexing (MB-OFDM) [8]- [10] is the global UWB standard, but its frequency hopping increases the complixity of radio frequency (RF) devices and the detection, and the high precision on the analog to digital convertor (ADC) device due to the large peak to average power ratio (PAPR) increases the power consumption and cost [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Introduction of SC-UWB proposal

Xiao

Zhang

et al. 2011

2011 International Conference on Computational Problem-Solving (ICCP)

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Ultra Wideband (UWB) technology has attracted widespread attention all over the world for the potential applications in high-rate short-range communications. The existing UWB technologies, e.g., the direct-sequence UWB (DS-UWB) and the multi-band orthogonal frequency division multiplexing (MB-OFDM), have high complexity, which results in high power consumption and cost, and limits their marketing. In this paper we introduce a single carrier UWB (SC-UWB) proposal, including the transceiver, modulation and coding schemes (MCSs), and the frame structure in the physical (PHY) layer. The proposed SC-UWB technology aims at low-power portable applications and has much lower complexity, and it has great potential to open the stagnant UWB marketing.

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Section: Introductionmentioning

confidence: 99%

Introduction of SC-UWB proposal

Xiao

Zhang

et al. 2011

2011 International Conference on Computational Problem-Solving (ICCP)

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“…Eslami et al in Eslami & Dong (2005) presented the performance of joint RAKE and minimum mean square error (MMSE) equalizer receiver for UWB communication systems. Parihar et al in two different papers, Parihar et al (2005) and Parihar et al (2007) gave thorough analysis of linear and non-linear equalizers for DS-UWB systems considering two different modulation techniques, binary phase shift keying (BPSK) and 4-ary bi-orthogonal keying (4BOK). Known channel state information (CSI) has been assumed in previous work but practically this is not feasible, because the wireless environment is always changing.…”

Section: Introductionmentioning

confidence: 99%

Equalization of Ultra Wideband Wireless Systems Using Genetic Algorithm

Surajudeen-Bakinde¹,

Zhu²,

Gao³

et al. 2011

Ultra Wideband Communications: Novel Trends - System, Architecture and Implementation

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“…Compared to tracking in traditional DS scenarios, tracking in UWB communications is much more challenging, because the difficulty of timing error estimation is accentuated due to dense multipath environment and low power consumption. In addition, since coherent RAKE together with equalization technique is generally employed in high rate DS-UWB receivers [3] [4], timing is required to be more accurate than low rate IR-UWB communications, where non-coherent receivers are generally used.…”

Section: Introductionmentioning

confidence: 99%

Periodical-Pilot-Assisted Tracking Loop with RAKE Combining for High Rate DS-UWB Receivers

Jin

Xiao

Zhang

et al. 2010

2010 IEEE International Conference on Communications

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Tracking constitutes a major challenge in UltraWideband (UWB) communications due to dense multipath environment and low power consumption. Most of the existing studies on tracking fall within low rate Impulse Radio UWB (IR-UWB) scope, with the assumption that Inter-Frame Interference (IFI) or Inter-Symbol Interference (ISI) is absent. In this paper, we settle on high rate Direct-Sequence UWB (DS-UWB) systems, in which ISI is inevitable. A Periodical-Pilot-Assisted Tracking Loop with RAKE combining, which we termed PPATL, is proposed for high rate DS-UWB scenario. The proposed tracking loop can effectively combat ISI and capture multipath energy. Analytical expressions of Probability Density Function (PDF) of timing error in locked state, Mean Square Error (MSE, or termed timing jitter) and Mean Time to Lose Lock (MTLL) are derived. Numerical results are presented and then confirmed by means of extensive computer simulation results. These results corroborate our theoretical analysis. Additionally, this proposed PPATL has been used and justified in our realistic DS-UWB system.

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Equalization for DS-UWB Systems---Part II: 4BOK Modulation

Cited by 17 publications

References 19 publications

Introduction of SC-UWB proposal

Introduction of SC-UWB proposal

Equalization of Ultra Wideband Wireless Systems Using Genetic Algorithm

Periodical-Pilot-Assisted Tracking Loop with RAKE Combining for High Rate DS-UWB Receivers

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