Title :
A new GMSK modulation based on LUT
Author_Institution :
Sch. of Inf., Linyi Univ., Linyi, China
Abstract :
An excellent implementation of GMSK modulators achieved taking advantage of symmetry properties of the pre-modulation filter is described. The design bypasses traditional processing steps such as modulating waveform ROM lookup, integration, and sine/cosine ROM lookup, and therefore does not introduce the related errors. The modulation process is implemented just looking up a table which contains several fixed shape of curves, and then choosing one of which and adjusting the direction and sign according to the last several input bits, at last, combining the whole curves into an output as the modulation result.
Keywords :
minimum shift keying; GMSK modulation; GMSK modulators; Gaussian minimum shift keying; LUT; ROM; Frequency shift keying; Indexes; Read only memory; Shape; Table lookup; formatting; insert; style; styling;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6023954
