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| A Novel Fractional Order Memory Polynomial Predistorter |
| Li Bo; Ge Jian-hua;Wang Yong |
| State Key Laboratory of Integrated Service Networks, Xidian Univ., Xi’an 710071, China |
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Abstract For the high power amplifier pedistorter using memory polynomial, a novel fractional order memory polynomial predistorter is proposed. The proposed predistortion polynomial is achieved by changing the even order term to fractional order term in the memory polynomial predistorter to improve the linearization performance. Computer simulations show that the proposed polynomial predistorter can get 10 dB and 8 dB out-band suppression gain based on two typical polynomial predistorters for Wiener-Hammerstein and memory polynomial power amplifier. FPGA realization shows that its increasing cost of hardware resources is acceptable, so easiness to implemented.
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Received: 26 March 2008
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2009, Vol. 31 
