Electronics and Telecommunications Research Institute

Jae-Moung Kim

Deock-Gil Oh

Soo Young Kim

Do-Seob Ahn

Seong-Pal Lee

Soo-Young Kim

Ming-Lu Jin

The rate compatible code is formed by forming an m dimensional product code by using a systematic block code in a predetermined number of axes: The m dimensional product code is divided into an information block and 2&#x2212;1 parity blocks. Indices are allocated to the divided blocks of the information block and 2&#x2212;1 parity blocks. Combinations of the information block and corresponding parity blocks adjacent to the information block are obtained. A first weighting factor wfor the combinations is estimated and saved. Another parity block adjacent to the saved combination is found and a new combination is formed. The first weighting factor wfor the new combination is estimated. If there are combinations having the same first weighting factor w, a second weighting factor wfor the combinations is estimated and the combinations having a smaller value of ware neglected. Rate compatible having the combinations are formed.

Method for forming rate compatible code using high dimensional product codes

A fast LUT predistortion apparatus and method for compensating nonlinear distortion of the high power amplifier HPA is disclosed. The apparatus includes a predistortion unit for predistorting an input complex digital signal based on a look up table LUT implementation and outputting a predistorted complex signal; and a power amplifier for amplifying the predistorted signal and outputting an amplified complex signal.

Fast LUT predistorter for power amplifier

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Seoul, South Korea

Jae-Moung Kim