High Order Modulation and Turbo Coding for GSM/EDGE
Hochstufige Modulation und Turbocodes für GSM/EDGE
978-3-8364-7077-3
3836470772
108
2008-04-20
49.00 €
eng
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This thesis evaluates enhancements for the existing global system for
mobile communications (GSM) data service enhanced data rates for GSM
evolution (EDGE). The development goal for further evolution of EDGE is to
provide enhanced maximum data rates. This can only be achieved by applying
higher order modulation schemes. The therefore evaluated modulation
schemes 16 symbol quadrature amplitude modulation (16QAM) and 32QAM will
be compared to 8 symbol phase shift keying (8PSK), which is already
employed for EDGE. All decisive parts of the GSM/EDGE transmission chain
were taken into account with the accomplished simulations and
different realizations for the components have been compared.
Decision--feedback equalization algorithms were extensively investigated
by performance with respect to the given scenario and as well by means of
complexity.
The simulation model is further extended by channel coding, where
convolutional as well as turbo coding is regarded and compared. A possible
iterative concatenation of equalizer and decoder to turbo equalization is
also examined.
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