Comparative performance of fast cosine transform with fixed-point roundoff error analysis
Chau‐Yun Hsu, Jui Chi Yao · IEEE Transactions on Signal Processing · 1994
Suitable scaling schemes are chosen for the Lee's and the Hou's (1984) fast DCT algorithms, and the relative fixed-point roundoff error analyses are carried out, respectively. The average output signal-to-noise ratio are then calculated, and it is shown that in DCT and for N>16 stage-by-stage scaling of Hou's algorithm has the best performance, whereas in inverse DCT, the global scaling of either algorithms has the best performance.>