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Note that the difference in for the floating- versus fixed-point implementation is caused by the round-off errors implemented in the fixed-point hardware.
Compared to a floating-point implementation, this fixed point implementation has been shown to provide the same signal quality at only about one-tenth of computation time.
This paper deals with the fixed point implementation of crossover digital predistortion (DPD).
To prevent saturation (considering either analog or fixed point implementation), is amplified rather than.
2D-DCTs having different size. is equivalent to a 16-bit fixed point implementation.
Care has to be taken to properly scale the intermediate results in a fixed point implementation.
It is also shown that the fixed-point FPGA implementation of the iterative algorithm performs as well as the floating-point implementation.
indicates a direct or a fast implementation of the DCT. is equivalent to a 16-bit fixed point implementation.
Figure 20 The DVB-T2 signal processing chain fixed point simulation results versus floating point implementation results.
Observing the graphics in Fig. 6 a new error is chosen and the conversion algorithm is applied again to find new suitable values for m and p. Fig. 6 Graphics of the average of the semi-axis sizes of the floating-point implementation, of the fixed-point implementation with (E_mathrm{max} = 0.01~%) and for the same fixed point implementation with (j) bits reduced.
A parallel VLSI algorithm and architecture with a good fixed point implementation appropriate for a memory-based implementation have been obtained.
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