Teracom, inspired by earlier research, introduced a new system concept dubbed "WiB", that aims to improve frequency reuse in the UHF band while at the same time, enable savings in both operating power and capital expenditures costs. Simulation results hint at an attainable

spectral efficiency Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given Bandwidth (signal processing), bandwidth in a specific communication system. It is a measure of how efficiently a l ...

of at least 1.37-1.6bit/s/Hz and a capacity increase in the range of 37-60%, while outlining possibilities for further optimizations. However, the concept hints at possible methods of convergence and coexistence with future 5G mobile communication technologies, although this was not the main focus of the proposal.

Innovation to broadcast towers

* each tower should transmit the whole 224 MHz of DTT spectrum, eliminating channel combiners. * a much lower transmission power is used (about 90% less) * modulation is more robust (e.g.,

QPSK Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency reference signal (the carrier wave). The modulation is accomplished by varying the sine and cosine inputs at ...

) * relaxed equipment requirements. * synchronization similar to SFN, but with different content and orthogonal scattered pilots.

Expected enhancements to receivers

* frequency hopping (e.g., Time-Frequency Slicing). * should be able to tune to wider channels (e.g., 32 MHz instead of 8 MHz). * antenna discrimination considerations. * layered Successive Interference Cancellation (SIC), performance could be further improved when optimizing for QPSK vs. QPSK. * variable bit rate services via multiple Physical Layer Pipes. * optional Interference Cancellation via

Beamforming Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. This is achieved by combining elements in an antenna array in such a way that signals at particular angles e ...

References

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External links

* https://tv.theiet.org/?videoid=9807 * https://wireless.kth.se/blog/events/extending-full-coverage-terrestrial-broadcast-broadband/ * http://www.panoramaaudiovisual.com/en/2016/09/26/hacia-un-nuevo-concepto-revolucionario-de-television-digital-terrestre/ Radio resource management Broadcast engineering Television technology Digital television Digital Video Broadcasting Technology forecasting