What is a Blackman Harris window?
The Blackman-Harris (BH) window family is a straightforward generalization of the Hamming family introduced in §3.2. Recall from that discussion that the generalized Hamming family was constructed using a summation of three shifted and scaled aliased-sinc-functions (shown in Fig.3.8).
What does a Blackman window do?
The Blackman window is a taper formed by using the first three terms of a summation of cosines. It was designed to have close to the minimal leakage possible. It is close to optimal, only slightly worse than a Kaiser window.
Which window function has highest width of lobe?
As shown in table (5.1) the triangular window function has a higher output noise power and wider 3-dB main lobe width [2].
What is the three term Blackman window family?
Three-Term Blackman-Harris Window. The classic Blackman window of the previous section is a three-term window in the Blackman-Harris family ( ), in which one degree of freedom is used to minimize side-lobe level, and the other is used to maximize roll-off rate. Harris [ 101, p. 64] defines the three-term Blackman-Harris window as…
Which is the correct filter for Blackman window?
Thus, one can choose the proper prototype filter to constrain the sidelobe power to be less than Φ. As a result, the criterion achieves good PAPR performance while constraining the sidelobe power to be under an acceptable level.
How is the sidelobe power of a Blackman window determined?
For the criterion, the sidelobe power is constrained to be less than Φ, and the sidelobe power is determined by both the signal power and the prototype filter. Thus, one can choose the proper prototype filter to constrain the sidelobe power to be less than Φ.
How is the spectrum density of Blackman window calculated?
Note that the spectrum density of the NC-OQAM/FBMC-based CR system is calculated using the Welch method with Blackman window. For the criterion, the sidelobe power is constrained to be less than Φ, and the sidelobe power is determined by both the signal power and the prototype filter.