Title :
Differential detection of GMSK using decision feedback
Author :
A. Yongacoglu;D. Makrakis;K. Feher
Author_Institution :
Dept. of Electr. Eng., Ottawa Univ., Ont., Canada
Abstract :
Differential detector structures that use decision feedback to partially remove the effect of destructive intersymbol interference from minimum-shift keying (MSK) are introduced. In comparison to the conventional two-bit differential detection of GMSK (Gaussian MSK), the proposed structures provide about 4-dB E/sub b//N/sub 0/ improvement when the premodulation filter time-bandwidth product is 0.25. As the premodulation filter becomes narrower, the advantages of the proposed receivers are more pronounced. Thus the bit-error-rate performance of differential detection is brought closer to coherent detection while avoiding the problems associated with the carrier recovery.
Keywords :
"Feedback","Detectors","Intersymbol interference","Filters","Bit error rate","Transmitters","Satellite communication","Fading","Encoding","Receivers"
Journal_Title :
IEEE Transactions on Communications