Title :
Counteraction of non-linear distortion in a novel MCM-DS-SS wireless LAN radio subsystem
Author :
Banelli, Paolo ; Cacopardi, Saverio ; Frescura, Fabrizio ; Reali, Gianluca
Author_Institution :
Istituto di Elettronica, Perugia Univ., Italy
Abstract :
A novel radio subsystem for WLAN, based on multicarrier modulation DS-SS, is presented. By comparing the obtained performance with the results of the DS-SS physical layer of the IEEE 802.11 standard, we point out some important architectural aspects and the factors that may limit the performance. In particular, the performance of a base-band pre-distorted non-linear amplifier is analysed by simulations. The analysis of the clipping effect (with and without memory) allows one to specify the optimum back-off value in order to balance the bit error rate performance and the efficiency of power amplifiers
Keywords :
IEEE standards; coding errors; electric distortion; error statistics; modulation; packet radio networks; power amplifiers; radiofrequency amplifiers; spread spectrum communication; telecommunication standards; wireless LAN; IEEE 802.11 standard; MCM-DS-SS wireless LAN radio subsystem; WLAN; baseband predistorted nonlinear amplifier; bit error rate performance; clipping effect; memory; multicarrier modulation; network architecture; nonlinear distortion; optimum back-off value; packet transmission; performance; physical layer; power amplifier efficiency; simulations; Analytical models; Fading; Frequency; Interference; Nonlinear distortion; Performance analysis; Radiofrequency amplifiers; Spread spectrum communication; System performance; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.632562
