Title :
Enhanced CCK modulation in wireless LAN with contention free
Author :
Zhang, Chao ; Lin, Xiaokang ; Hatori, Mitsutoshi
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
It is well known that contention is unavoidable in WLAN based on IEEE 802.11 when two users send data simultaneously. Because of this, the transmission rate of each user is decreased tremendously. We present a novel enhanced CCK (complementary code keying) modulation scheme based on Ear ZCZ (zero correlation zone) sequences; this scheme gives contention free operation when the system works in approximately synchronization mode. Then the transmission rate of each user can be maintained with almost no interference from other users.
Keywords :
modulation coding; radiofrequency interference; sequences; synchronisation; wireless LAN; CCK modulation; Ear ZCZ sequences; IEEE 802.11; WLAN; complementary code keying; contention free operation; synchronization mode; wireless LAN; zero correlation zone sequences; Autocorrelation; Chaos; Ear; Informatics; Interference; Modulation coding; Multiaccess communication; Production facilities; Wide area networks; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1390557
