Space-time self-adaptive filtering method and device
A space-time self-adaptive and space-time filtering technology, which is applied in the field of communication, can solve problems affecting the stability of the loop in the receiver, increasing the complexity and cost of externally expanded memory, and limited memory resources, so as to improve the feasibility, The effect of slowly changing, smoothing noise
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Embodiment 1
[0055] Embodiment 1, a space-time adaptive filtering method, such as figure 1 shown, including:
[0056] Obtain and store multi-channel baseband data;
[0057] Calculate the space-time adaptive filter coefficient w according to the stored multi-channel baseband data;
[0058] smoothing the space-time adaptive filter coefficient w to obtain the smoothed coefficient w smooth ;
[0059] According to the smoothed coefficient w smooth Space-time filtering is performed on the acquired multi-channel baseband data.
[0060] In this embodiment, in order to make the coefficients change more smoothly, the coefficient w is smoothed, and the smoothed coefficients are applied to the space-time filter to filter the baseband data and output useful signals, which can improve the space-time self-efficacy. Adapt to problems caused by fluctuations in filter coefficients.
[0061] In an implementation manner of this embodiment, the step of acquiring and storing multi-channel baseband data ma...
Embodiment 2
[0116] Embodiment 2, a space-time adaptive filtering device, such as image 3 shown, including:
[0117] storage unit, space-time filter;
[0118] a sampling unit, configured to obtain multi-channel baseband data and store it in the storage unit;
[0119] A coefficient calculation unit, configured to calculate the space-time adaptive filter coefficient w according to the stored multi-channel baseband data;
[0120] A coefficient smoothing unit, configured to smooth the space-time adaptive filter coefficient w to obtain a smoothed coefficient w smooth ;
[0121] The space-time filter is used according to the smoothed coefficient w smooth performing space-time filtering on the multi-channel baseband data acquired by the sampling unit.
[0122] In an implementation manner of this embodiment, the sampling unit includes:
[0123] An analog-to-digital converter is used to collect multi-channel intermediate frequency signals whose data length is P points; P is a positive intege...
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