Hybrid system having multiple downlink channels and a single uplink channel

A system comprising:

• a centralized synchronizing communication controller, a shared signal wired distribution line, a first hybrid converter, and a second hybrid converter, wherein the centralized synchronizing communication controller is used for transmitting downlink signals over the shared signal wired distribution line, to the first and the second hybrid converters, via a first downlink channel using a first frequency and via a second downlink channel using a second frequency;
• wherein the first hybrid converter is used for communicating with a first wireless client via the air using a third frequency;
• wherein the second hybrid converter is used for communicating with a second wireless client via the air using a fourth frequency;
• wherein the first and the second hybrid converters transmit to the centralized synchronizing communication controller, via an uplink channel using a fifth frequency, a superpositioned uplink signal received from the first and the second wireless clients;
• wherein the superpositioned uplink signal having the fifth frequency is a superposition of the fifth frequency signal coming from the first hybrid converter and the fifth frequency signal coming from the second hybrid converter;
• wherein the centralized synchronizing communication controller achieves wireless clients synchronization and bandwidth allocations by simultaneously managing the first and the second downlink channels and the uplink channel;
• and whereby the uplink signals and the downlink signals are modulated using orthogonal multi-carrier modulation.