Title :
The effect of blockwise transmission on higher-order modulation schemes for SC/FDE
Author :
Witschnig, H. ; Ossberger, G. ; Springer, A. ; Koppler, A. ; Maurer, L. ; Huemer, M. ; Weigel, R.
Author_Institution :
ICIE, Linz Univ., Austria
Abstract :
This paper compares the performance of higher-order modulation schemes and coding rates for a single carrier system with frequency domain equalization (SC/FDE) and orthogonal frequency division multiplexing (OFDM). The effects of cyclic prefix and blockwise equalization for SC/FDE are investigated in detail. It is shown that blockwise processing leads to a deterioration in terms of BER behavior - especially for higher modulation formats such as 16 QAM or 64 QAM. The most reliable solution to this problem is coding. Applying a high-rate code compensates the investigated effect completely. The achieved BER behavior is compared with the results of an OFDM system.
Keywords :
OFDM modulation; cyclic codes; equalisers; error statistics; mobile computing; mobile radio; quadrature amplitude modulation; wireless LAN; 16 QAM; 64 QAM; BER; OFDM; SC/FDE; WLAN; blockwise equalization; coding rates; cyclic prefix; higher-order modulation schemes; mobile computing; orthogonal frequency division multiplexing; performance; single carrier system with frequency domain equalization; Adaptive signal processing; Baseband; Bit error rate; Finite impulse response filter; Frequency domain analysis; Modulation coding; OFDM modulation; Quadrature amplitude modulation; Telecommunication standards; Wireless LAN;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088394
