Abstract: A distributed wireless system comprises a controlling node (20) and two or more antenna processing nodes (22) communicatively coupled to the controlling node (20) but spatially separated from each other and from the controlling node (20). A method in the controlling node (20) comprises controlling (1110) a first subset of the antenna processing nodes (22) to transmit synchronization signal blocks, SSBs, having a first SSB identifier, the first subset including one or more of the antenna processing nodes, and controlling (1120) a second subset of the antenna processing nodes (22) to transmit SSBs having a second SSB identifier, the second subset including one or more of the antenna processing nodes (22) and being disjoint with the first subset.

Abstract: Testing radio equipment is described wherein an interfering signal is swept in frequency with a step size that is chosen proportional to the bandwidth of the receive channel of the radio equipment. For example, a respective frequency bandwidth (BCh) is determined of a plurality of receive channels of the radio equipment. A proportionality constant is selected for a frequency step size. For each respective receive channel, interfering radio signals are generated and the interfering radio signals are controlled to stepwise sweep in frequency outside of each respective receive channel. The stepwise sweeping of the interfering frequency is performed with a frequency step size that is a product of the respective bandwidth and the selected proportionality constant. Any spurious response is detected in the respective receive channel.

Abstract: Testing radio equipment is described wherein an interfering signal is swept in frequency with a step size that is chosen proportional to the bandwidth of the receive channel of the radio equipment. For example, a respective frequency bandwidth (BCh) is determined of a plurality of receive channels of the radio equipment. A proportionality constant is selected for a frequency step size. For each respective receive channel, interfering radio signals are generated and the interfering radio signals are controlled to stepwise sweep in frequency outside of each respective receive channel. The stepwise sweeping of the interfering frequency is performed with a frequency step size that is a product of the respective bandwidth and the selected proportionality constant. Any spurious response is detected in the respective receive channel.