Transmission of high-definition (HD) video is a promising application for 60GHz wireless links, since very high transmission rates (up to several Gbit/s)are possible. In particular we consider a sports stadium broadcasting systemwhere signals from multiple cameras are transmitted to a central location. Dueto the high pathloss of 60 GHz radiation over the large distances encounteredin this scenario, the use of relays might be required. The current paperanalyzes the joint selection of the routes (relays) and the compression ratesfrom the various sources for maximization of the overall video quality. Weconsider three different scenarios: (i) each source transmits only to one relayand the relay can receive only one data stream, and (ii) each source cantransmit only to a single relay, but relays can aggregate streams fromdifferent sources and forward to the destination, and (iii) the source cansplit its data stream into parallel streams, which can be transmitted viadifferent relays to the destination. For each scenario, we derive themathematical formulations of the optimization problem and re-formulate them asconvex mixed-integer programming, which can guarantee optimal solutions.Extensive simulations demonstrate that high-quality transmission is possiblefor at least ten cameras over distances of 300 m. Furthermore, optimization ofthe video quality gives results that can significantly outperform algorithmsthat maximize data rates.
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