Title :
Evaluation of coding and modulation schemes based on Golay complementary sequences for efficient OFDM transmission
Author :
Hunziker, T. ; Bernhard, U.P.
Author_Institution :
Commun. Technol. Lab., Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
Block codes based on Golay complementary sequences have been proposed for orthogonal frequency division multiplexing (OFDM) transmission to obtain signals with flat envelopes. These codes confine the peak-to-average power ratio of multicarrier signals to a favorable value of 3 dB at the cost of a lower code rate. Additionally, the coding employs diversity which renders a performance improvement in frequency-selective fading channels. This paper contains a discussion on the capabilities and the limits of OFDM transmission techniques using such codes. Different coding and modulation schemes are compared and guidelines are provided for the choice of the appropriate transmission scheme. The Magic WAND (wireless ATM network demonstrator) system set-up is used to discuss the requirements of a practical system
Keywords :
Golay codes; OFDM modulation; asynchronous transfer mode; block codes; diversity reception; fading channels; land mobile radio; modulation coding; sequences; Golay complementary sequences; Magic WAND; OFDM transmission; block codes; code rate; coding; diversity; flat envelopes; frequency-selective fading channels; modulation; multicarrier signal; orthogonal frequency division multiplexing; peak-to-average power ratio; performance; wireless ATM network demonstrator; Block codes; Communications technology; Fast Fourier transforms; Guidelines; Intersymbol interference; Modulation coding; OFDM modulation; Radio transmitters; Signal synthesis; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686566
