Co-channel coexistence between DVB-T/H and LTE standards in a shared frequency band

Abstract

In the near future, besides the first and second generation Digital Video Broadcasting -Terrestrial (DVB-T/T2) standards, the Long-Term Evolution (LTE) system will be the most widespread to provide multimedia services in excellent quality, mainly in Europe. These systems can operate in a shared UHF frequency band and significantly affect the performance of the systems colliding. This paper deals with the study of co- channel coexistence between DVB-T/H and LTE systems in a shared frequency band. To measure the impact of the interfering LTE RF signal (with various bandwidths and RF signal levels) on the DVB-T/H one, an appropriate measurement testbed is realized. Objective parameters (namely bit and modulation error ratio) are used to evaluate the overall influence of the LTE mobile services on the DVB-T/H digital TV services.Finally, to explore the impact of the interference effects on DVB-T/H TV signal a digital video quality analyzer is used.

Interference Analysis between Mobile Radio and Digital Terrestrial Television in the Digital Dividend Spectrum

“…Quality of Service can be expressed on an objective or subjective basis. In the first case, the parameters Bit Error Rate (BER), the Packet Error Rate (PER), and the Modulation Error Rate (MER) can be used [20]. Unfortunately, BER, PER, and MER values usually are not available in consumer-grade DVB-T receivers.…”

“…After theoretical analysis and simulations, in order to measure the impact of the interfering LTE system on the DVB-T system, appropriate experimental laboratory test beds have been used and results have been presented in [17][18][19][20][21][22][23]. Results from laboratory and conducted field tests cannot be directly compared, due to different DTT standard and LTE parametrization used in those tests.…”

“…For example, high dependence of the digital TV signal power to interfering signal power ratio on the bandwidth of the interfering signal and applied FEC protection has been measured in [18]. However, significant PR value offset between channel 60, and channels 58-59 has been confirmed, both in laboratory [17][18][19][20][21][22][23] and conducted field test.…”

“…Taking into account the power density spectrum load dependency of an eNodeB signal, the present paper aims to provide an effective contribution in the comparison of the PR and PD results obtained from the field measurements with results obtained from the simulations [12][13][14], and results obtained from laboratory measurements [17][18][19][20][21][22][23].…”

Spectral Overlap Optimization for DVB-T2 and LTE Coexistence

“…In [7]- [10], the authors have built a set of experimental testbed to measure the impact of a October 7, 2019 DRAFT coexistence between DVB-T2 and LTE in different scenarios, with either co-located or adjacent bands. The performance of DVB systems is evaluated using the quasi error free (QEF), the modulation error ratio (MER) or the received power criteria while the bit error rate (BER), the error vector magnitude (EVM) and channel quality indicator (CQI) are rather used for LTE.…”