TY  - SER
AU  - Nuttavudh Satravaha
AU  - Makelainen,Kimmo
AU  - Chindakorn Tuchinda, 
AU  - Zhang,Jian-Guo
ED  - Finnish International Development Agency (FINNIDA),  Finland, 
TI  - Application of geometric dynamic channel allocation in a Low Earth Orbit (LEO) satellite system
T2  - Research studies project report
PY  - 1995///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Artificial satellites in telecommunication
N1  - A research study submitted in partial fulfillment of the requirement for the degree of  Master of Engineering, School of Engineering and Technology; Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1995
N2  - In this research study an investigation into a low-complexity Soft-Output Viterbi  Equalization (SOVE) is made. The algorithm delivers M-ary reliability information for each  detected symbol. The reliability information value is calculated by using Bayes' theorem. Two  solutions oflow-complexity SOVE named one-dimensional Vertical update SOVE (V-SOVE) and  one-dimensional Horizontal update SOVE (H-SOVE) are presented and applied at the cost of  suboptimality. The quality of the soft-outputs produced from the V-SOVE and H-SOVE is  evaluated in terms of Bit Error Rate (BER).  The performance of the system using the V-SOVE and the H-SOVE is simulated by use of  computer simulation. The Typical Urban channel specified by GSM standards and the n/4- shifted Differential Quadrature Phase Shift Keying (DQPSK) modulation method are used in the  simulation model. Perfect knowledge of the channel coefficients are assumed in the simulation  work. Comparisons between the performance of the V-SOVE, the H-SOVE and the classical  Viterbi Equalizer (VE) are made
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B15374
ER  -