The bit error rate (BER) performance for ultra-wide band (UWB) indoor communication with the impact of metallic furniture is investigated. The impulse responses of different indoor environments for any transmitter and receiver location are computed by shooting and bouncing ray/image and inverse fast Fourier transform (IFFT) techniques. By using the impulse responses of these multi-path channels, the BER performance for binary pulse amplitude modulation (BPAM) impulse radio UWB communication system are calculated. Numerical results have shown that the multi-path effect by the metallic cabinets is an important factor for BER performance. Also the outage probability for the UWB multi-path environment with metallic cabinets is larger than that with wooden cabinets. Finally, it is worth noting that in these cases the present work provides not only comparative information but also quantitative information on the performance reduction.

/pdf/impact-of-metallic-furniture-on-uwb-channel-statistical-yfoasyahyz.pdf

Analysis of Interference

Impact of Metallic Furniture on UWB Channel Statistical Characteristics by BER

A comparison of UWB communication characteristics for different distribution of people and various materials of walls in real environments is investigated. The impulse responses of these cases are computed by applying shooting and bouncing ray/image (SBR/Image) techniques and inverse Fourier transform. The frequency dependence utilized in the structure on the indoor channel is accounted for in the channel calculation. By using the impulse response of these multi-path channels, the mean excess delay, root mean square (RMS) delay spread, the number of multi-path arrivals within 10 dB of the peak multi-path arrival (NP10dB), and the number of paths required to meet the 85% energy capture threshold (NP(85%)) for these different distribution of people and various materials of walls have been obtained. The bit error rate (BER) performance for UWB indoor communication is calculated. The outage probability for binary antipodal-pulse amplitude modulation (B-PAM) system has been presented. Numerical results have shown that the multi-path effect by people is an important factor for BER performance. Some different distribution of people and various materials of walls have been very carefully investigated. Finally, it is worth noting that in these cases the present work provides not only comparative information but also quantitative information on the performance reduction.

/pdf/uwb-communication-characteristics-for-different-distribution-2s8fbl6w0k.pdf

UWB Communication Characteristics for Different Distribution of People and Various Materials of Walls

In this paper, simulation is conducted to study the interference to digital television (DTV) system due to the introduction of Long Term Evolution (LTE) system. Access coverage loss curves and capacity performance of DTV system are plotted with Adjacent Channel Interference Ratio (ACIR). The results indicate that minimum interference effects on DTV system can be achieved when deploying LTE system on its adjacent channels if proper separation is kept.

Interference Simulation from LTE to Digital Terrestrial Television

The proximal part (f-centromere) of the X-chromosome has a peculiar brood pattern. This interval has been divided by car in the present test. Maternal influence on proximal recombination was obtained. The maternal influence occurred in broods corresponding to meiosis in pupal stages. A low coefficient of coincidence was scored. The car-centromere interval was further divided by su(f). Heterochromatic recombination was obtained at levels described in the literature. The majority of recombinants were scored in the 1-3rd day brood. No double cross-overs were obtained in the heterochromatin or the adjacent euchromatic region. The coincidence in proximal parts of the chromosomes is discussed.



2Department of Genetics, University of Stockholm, S-106 91 Stockholm, Sweden

https://www.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1601-5223.1986.tb00671.x

Analysis of Interference

Citations

Impact of Metallic Furniture on UWB Channel Statistical Characteristics by BER

UWB Communication Characteristics for Different Distribution of People and Various Materials of Walls

Interference Simulation from LTE to Digital Terrestrial Television

Recombination frequencies and the coincidence in proximal X-chromosome regions including heterochromatin in Drosophila melanogaster

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