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

Volume

3

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

1323

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088394

Filename

1088394