Novel Radio Channel Models for Evaluation of DVB-H Broadcast Systems

Parviainen, H.; Kyösti, Pekka; Zhao, Xiongwen; Himmanen, Heidi; Talmola, Pekka; Rinne, J.

doi:10.1109/pimrc.2006.254031

Cited by 16 publications

(8 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that signals which are 30 dB below the strongest power level are considered to be noise. This threshold is also consistent with other published works [24]. Path loss and shadowing effects were removed by normalizing the peak power of each impulse response to 0 dB.…”

Section: B Channel Estimation and Featuressupporting

confidence: 87%

“…Comparisons of the SISO channel model with previous published works show good agreement. The mobile DVB channel profile with single transmitter published in [24] is very close to the PDP shown in Fig. 6 and Table V, while the RMS DS and excess delay, 0.25 µs and 2.21 µs, match well with the SISO channel parameters proposed in Table IV.…”

Section: B Channel Estimation and Featuressupporting

confidence: 70%

See 1 more Smart Citation

Measurement Campaign on Transmit Delay Diversity for Mobile DVB-T/H Systems

Bari

Bard²,

Arrinda

et al. 2010

IEEE Trans. on Broadcast.

View full text Add to dashboard Cite

show abstract

Section: B Channel Estimation and Featuressupporting

confidence: 87%

Section: B Channel Estimation and Featuressupporting

confidence: 70%

Measurement Campaign on Transmit Delay Diversity for Mobile DVB-T/H Systems

Bari

Bard²,

Arrinda

et al. 2010

IEEE Trans. on Broadcast.

View full text Add to dashboard Cite

show abstract

“…In the overlapping area of two adjacent transmitting stations, signals transmitted by the two stations arrive at the terminal with comparable power and long delay spread between each other. As shown in Turku indoor channel, the long delay spread channel in SFN is actually composed of two clusters of paths [4]. Each cluster forms an independent Ricean or Rayleigh channel.…”

Section: Introductionmentioning

confidence: 99%

Channel Estimation for Pilot-Aided OFDM Systems in Single Frequency Network

Zhao

2010

Wireless Pers Commun

View full text Add to dashboard Cite

In single frequency network (SFN), there exist some special long delay spread channels as well as conventional multipath channels. For pilot-aided orthogonal frequency division multiplex (OFDM) systems, channel estimation is usually accomplished by interpolation with pilots. However, few pilot sub-carriers exist within the coherent bandwidth of the long delay spread channels in SFN. In this case, conventional frequency domain interpolation methods cannot work properly. In a narrowband channel, this paper indicates that both the real and the imaginary parts of channel frequency response can be accurately approximated as a sine-wave with DC offset. For many practical pilot-aided OFDM systems, the bandwidth of the narrowband channel mentioned before is comparable with the interval between several adjacent pilot sub-carriers. Then this paper proposes a sine-wave based frequency domain interpolation method for the channel estimation of pilot-aided OFDM systems in SFN. As simulation results show, the proposed method performs well in the long delay spread channel, whereas the mismatched Wiener interpolation filter (WIF) estimates channel response inaccurately. Moreover, the proposed method gives accurate channel estimation in conventional multipath channels, especially for the systems which adopt high order modulations.

show abstract

“…We employ models for the typical urban 6-tap (TU6) channel, which is representative for DVB-H vehicular reception for Doppler frequencies above 10 Hz (e.g., 18 km/h at 600 MHz) [14], and for the pedestrian indoor (PI) channel model specifically developed for slowly moving DVB-H pedestrian reception [122]. Models were developed from laboratory measurements using the same DVB-H receivers employed in the field measurements in Turku following the procedure described in Appendix A.3.…”

Section: Fading Margin Gain Simulation Resultsmentioning

confidence: 99%

“…This channel model reproduces a typical terrestrial profile in an urban area and consists of 6 discrete paths. For slowly moving pedestrian reception, specific tapped delay line channel models for DVB-H have been proposed, which are known as PI/PO (Pedestrian Indoor/Pedestrian Outdoor) channels, as it was observed that the TU6 model provides pessimistic results [122], [143]. The channel models have been developed by the Wing TV project based on field measurements in SFNs.…”

Section: Fast Fadingmentioning

confidence: 99%

Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Barquero¹

View full text Add to dashboard Cite

One of the challenges that the wireless industry faces today is to provide mass multimedia services to mobile and portable devices at low cost, making them affordable to users and profitable to operators. The most representative service is mobile TV, which is expected to become a key application in future wireless networks. Nowadays cellular networks cannot support large scale consumption of such services, and newly deployed mobile broadcasting networks are very expensive to deploy due to the large investment in infrastructure required to provide acceptable coverage levels.This dissertation addresses the problem of providing a cost efficient provisioning of mass mobile multimedia services with existing wireless infrastructure for digital broadcasting and cellular systems. State-of-the-art mobile broadcasting (DVB-H) and cellular (evolved 3G+ networks with HSDPA and MBMS) commercial technologies have been considered. Our approach is DVB-H centric. The main paradigm proposed to provide lower cost services is to avoid deployment a DVB-H network with high capacity and full area coverage from the beginning. Instead, it is proposed to perform an incremental DVB-H network deployment that follows the user demand. Within this context, the cellular network is essential to avoid over-dimensioning the broadcast capacity, and also in low populated areas until the deployment of a DVB-H transmitter or gap-filler becomes convenient.The main technical solution proposed in this dissertation is to perform a multi-burst protection of the transmission in DVB-H using Raptor coding. The idea behind is to exploit the time diversity of the mobile channel to improve the robustness of the transmission, and thus the coverage level, at the expense of an increased network latency. Contrarily to most technical enhancements proposed in the literature, the introduction of this technique would be backwards-compatible with existing networks and terminals, since it could be introduced as a software update either at the link or the application layer.On the other hand, this dissertation also investigates the potential efficiency improvement that can be achieved in a hybrid DVB-H/3G+ system when the cellular network is used to repair errors of the broadcast DVB-H transmissions. Raptor coding is also considered in this case, but at the application layer; since it enables an easy and efficient implementation of the repair mechanisms in such hybrid systems.iii iv ABSTRACT In the dissertation we evaluate the potential gain that can be obtained with multi-burst forward error correction (FEC) in DVB-H compared to the conventional intra-burst FEC mechanism by means of simulations, lab and field measurements, and theoretical studies. Our results show that it is feasible to significantly increase the area coverage and the service quality in already deployed networks, as well as to reduce the investment in infrastructure required to deploy new networks. The gain is especially important for services where a large latency is not an issue, such as file do...

show abstract

Novel Radio Channel Models for Evaluation of DVB-H Broadcast Systems

Cited by 16 publications

References 2 publications

Measurement Campaign on Transmit Delay Diversity for Mobile DVB-T/H Systems

Measurement Campaign on Transmit Delay Diversity for Mobile DVB-T/H Systems

Channel Estimation for Pilot-Aided OFDM Systems in Single Frequency Network

Cost Efficient Provisioning of Mass Mobile Multimedia Services in Hybrid Cellular and Broadcasting Systems

Contact Info

Product

Resources

About