MIMO Eq Impulse Response (802.16 OFDMA)
The trace is available only for measurements of an STC Space Time Coding (STC) allows the transmitter to transmit signals (information) both in time and space, meaning the information is transmitted by two antennas at two different times consecutively./MIMO Multiple Input, Multiple Output: A physical layer (PHY) configuration in which both transmitter and receiver use multiple antennas. zone.
trace data shows the impulse response of the equalization filter as decoded by the Matrix Decoder.. The equalizer impulse response is computed by taking the reciprocal of the channel equalizer frequency response, performing data filtering and computations that produce a result length of 4x the FFT Fast Fourier Transform: A mathematical operation performed on a time-domain signal to yield the individual spectral components that constitute the signal. See Spectrum. length, and then converting to the time domain. The is the computed channel impulse response used to compensate for signal channel response degradation.
The trace is composed of overlaid data, each overly consists of the computed from a unique Tx/Rx path. Marker annotation can be used to distinguish the Tx/Rx path with the selected data point.
The number of overlays on a trace can be reduced if some of the Tx/Rx paths are detected as inactive and the Include Inactive Antenna Paths on MIMO Traces parameter is cleared.
The equalization filter used to compute this trace is presented in the MIMO Ch Frequency Response trace. This trace is computed as described in Eq Impulse Response.
See Also
Available Trace Date (802.16 OFDMA)
