Abstract: The present application relates to a signal combining apparatus having an input for receiving a signal from a signal generator and an output for outputting a signal to a signal analyzer. The input signal is split into a plurality of identical signals by a splitter and the signals are transmitted, to inputs a plurality of duplex combiners, each of which has an input/output port to which a device under test can be connected. Outputs of the duplex combiners are connected to a plurality of receive paths, whose outputs are connected to a signal relay which is operative to receive one or more signals received through the receive paths. An output of the signal relay is connected to the output of the signal combining apparatus, such that a composite signal output by the signal relay containing the signals received through the receive paths can be analyzed by the signal analyzer.

Abstract: A method for estimating noise power in a received signal that was transmitted using an orthogonal frequency division multiple access (OFDMA) modulation scheme in which pilot symbols are transmitted during OFDM symbol periods of the transmitted signal, the method comprising: interleaving a de-patterned pilot symbol that was transmitted in an OFDM symbol period of the transmitted signal with a de-patterned pilot symbol that was transmitted in a previous OFDM symbol period of the transmitted signal to generate an interleaved de-patterned pilot symbol; filtering the de-patterned interleaved pilot symbol to remove a signal component of the interleaved pilot symbol to leave a noise component of the interleaved de-patterned pilot symbol; and processing the noise component generated by the filtering to generate an estimate of the noise power in the interleaved de-patterned pilot symbol.

Abstract: Components of a modular component system are disclosed. A representative component has, at a first side, a first channel for receiving a connector and, at a second side, a second channel for receiving a connector. The first channel extends inwardly from an outer edge of the first side and in cross-section has a body portion which extends from an opening in the component in a direction generally parallel to the first side and a head portion which extends outwardly of the body portion. The second channel extends inwardly from an outer edge of the second side and in cross-section has a body portion which extends from an opening in the component in a direction generally parallel to the second side and a head portion which extends outwardly of the body portion.

Abstract: A method for estimating noise power in a received signal that was transmitted using an orthogonal frequency division multiple access (OFDMA) modulation scheme in which pilot symbols are transmitted during OFDM symbol periods of the transmitted signal, the method comprising: interleaving a de-patterned pilot symbol that was transmitted in an OFDM symbol period of the transmitted signal with a de-patterned pilot symbol that was transmitted in a previous OFDM symbol period of the transmitted signal to generate an interleaved de-patterned pilot symbol; filtering the de-patterned interleaved pilot symbol to remove a signal component of the interleaved pilot symbol to leave a noise component of the interleaved de-patterned pilot symbol; and processing the noise component generated by the filtering to generate an estimate of the noise power in the interleaved de-patterned pilot symbol.

Abstract: The present application relates to a signal combining apparatus (12) having an input for receiving a signal from a signal generator (14) and an output for outputting a signal to a signal analyser (16). The input signal is split into a plurality of identical signals by a high isolation splitter (20) and the plurality of signals are transmitted via a plurality of transmit paths (22), which can be selectively enabled or disabled, to inputs a plurality of duplex combiners (24), each of which has an input/output port to which a device under test (18) can be connected. Outputs of the plurality of duplex combiners (24) are connected to a plurality of receive paths (26), which can be selectively enabled and disabled, whose outputs are connected to a signal relay (28) which is operative to receive one or more signals received through the plurality of receive paths (26).

Abstract: Components of a modular component system are disclosed. A representative component has, at a first side, a first channel for receiving a connector and, at a second side, a second channel for receiving a connector. The first channel extends inwardly from an outer edge of the first side and in cross-section has a body portion which extends from an opening in the component in a direction generally parallel to the first side and a head portion which extends outwardly of the body portion. The second channel extends inwardly from an outer edge of the second side and in cross-section has a body portion which extends from an opening in the component in a direction generally parallel to the second side and a head portion which extends outwardly of the body portion.