A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is f.sub.B, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)f.sub.B or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M.sup.2 combinations of input and output.

A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is f.sub.B, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)f.sub.B or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M.sup.2 combinations of input and output.

A generalized frequency division multiplexing method with multiple-input multiple-output and flexible index modulation, which enables to have the energy efficiency provided by space and frequency index modulation systems with generalized frequency division multiplexing (GFDM) without complicating the transmitter and receiver structure and provide for the efficient use of frequency resources, increase in spectral efficiency, minimum complexity and increase in energy efficiency.

A system 1 for controlling a plurality of irrigation valves 2.sub.1, 2.sub.2 . . . 2.sub.n is shown. The system receives 110 or 240 volts, mains voltage, electricity from the mains. This is applied to a 28 volt square wave generator 3, whose output is modulated in a modulator 4 under control of a control circuit 5. The modulated output is applied to a live line 6, receiving modulated positive and negative pulses of 28 volts with respect to a neutral line 7. At each valve 2.sub.1, 2.sub.2 . . . 2.sub.n, a respective decoder 8.sub.1, 8.sub.2 . . . 8.sub.n is provided. Live and neutral lines 10,11 pass from the decoders to the valves. Each decoder 8.sub.n has an input connector 21 for the live and neutral pair 6,7 powering it and an output connector 22 for the further live and neutral pair 10,11 to the respective valve 2.sub.n.

The technologies described herein are generally directed toward facilitating indicating frequency and time domain resources in communication systems with multiple transmission points. According to an embodiment, a system can comprise a processor, a base transceiver station, and a memory that can store executable instructions that, when executed by the processor, can facilitate performance of operations. The operations can include receiving a first signal. The operations can further include combining the first signal with a second signal resulting in a combined signal, wherein the first signal can be combined using a different weight than is applied to the second signal. The operations can further include broadcasting by an antenna of the base transceiver station, the combined signal.

The technologies described herein are generally directed toward facilitating indicating frequency and time domain resources in communication systems with multiple transmission points. According to an embodiment, a system can comprise a processor, a base transceiver station, and a memory that can store executable instructions that, when executed by the processor, can facilitate performance of operations. The operations can include receiving a first signal. The operations can further include combining the first signal with a second signal resulting in a combined signal, wherein the first signal can be combined using a different weight than is applied to the second signal. The operations can further include broadcasting by an antenna of the base transceiver station, the combined signal.

A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is f.sub.B, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)f.sub.B or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M.sup.2 combinations of input and output.

A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is f.sub.B, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)f.sub.B or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M.sup.2 combinations of input and output.

A technique relates to a superconducting microwave combiner. A first filter through a last filter connects to a first input through a last input, respectively. The first filter through the last filter each has a first passband through a last passband, respectively, such that the first passband through the last passband are each different. A common output is connected to the first input through the last input via the first filter through the last filter.

A technique relates to a superconducting microwave combiner. A first filter through a last filter connects to a first input through a last input, respectively. The first filter through the last filter each has a first passband through a last passband, respectively, such that the first passband through the last passband are each different. A common output is connected to the first input through the last input via the first filter through the last filter.