Title :
The performance of a packet mode OFDM modem for 5 GHz band high-data-rate wireless LANs
Author :
Mizoguchi, Masato ; Enomoto, Kiyoshi ; Onizawa, T. ; Kumagai, Tbmoaki ; Morikura, Masahiro
Author_Institution :
NTT Access Network Service Syst. Labs., Kanagawa, Japan
Abstract :
This paper describes the configuration and experimental results of a packet mode OFDM modem which is developed for 5 GHz high-data-rate wireless LANs. The prototype, implemented by programmable gate array devices, realizes 1/4 scale operation of 20 Mbit/s transmission. It employs DQPSK-OFDM modulation using 48 subcarriers with convolutional coding of rate 3/4 and it also employs a burst synchronization circuit which performs symbol timing detection and carrier frequency offset compensation. The experimental results show that it achieves good packet error rate performance (0.1% or less) in multipath channels with RMS delay spread of 100 ns
Keywords :
OFDM modulation; convolutional codes; differential phase shift keying; error statistics; modems; multipath channels; packet radio networks; quadrature phase shift keying; synchronisation; wireless LAN; 20 Mbit/s; 5 GHz; DQPSK-OFDM modulation; RMS delay spread; burst synchronization circuit; carrier frequency offset compensation; convolutional coding; high-data-rate wireless LAN; multipath channels; packet error rate performance; packet mode OFDM modem; programmable gate array devices; symbol timing detection; Circuits; Convolutional codes; Error analysis; Frequency synchronization; Modems; Modulation coding; OFDM modulation; Prototypes; Timing; Wireless LAN;
Conference_Titel :
Mobile Multimedia Communications, 1999. (MoMuC '99) 1999 IEEE International Workshop on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5904-6
DOI :
10.1109/MOMUC.1999.819503
