OFDM frame synchronization in slotted ALOHA mobile communication systems

Author

Chung, Jong-Moon ; Liu, Dongfang ; Ramasamy, Krishnaveni ; Varadarajan, Sriram

Author_Institution

Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1373

Abstract

Wireless application of orthogonal frequency division multiplexing (OFDM) is gaining much attention as a modulation technique for high speed data transmission in various applications due to its good properties against frequency selective fading, intersymbol interference (ISI), and intercarrier interference (ICI). However there are still several issues related to synchronization and multiple access that require more research. We investigate the performance of OFDM transmission through slotted ALOHA multiple access and compare the results to unslotted ALOHA OFDM systems. The results show that the OFDM slotted ALOHA technique has advantages in SNR, throughput, and frame synchronization performance compared to unslotted ALOHA with OFDM, which suggests slotted ALOHA as a candidate for multiple access for OFDM wireless communication applications

Keywords

OFDM modulation; access protocols; adjacent channel interference; data communication; fading channels; interference suppression; intersymbol interference; mobile radio; synchronisation; telecommunication traffic; ICI; ISI; OFDM; SNR; frame synchronization; frequency selective fading; high speed data transmission; intercarrier interference; intersymbol interference; modulation; multiple access; orthogonal frequency division multiplexing; performance; slotted ALOHA; throughput; wireless communication; AWGN; Application software; Fading; Frequency synchronization; Intersymbol interference; Laboratories; Mobile communication; OFDM modulation; Throughput; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.956421

Filename

956421