Title :
Low-complexity receiver design for OFDM packet transmission with mobility support
Author :
Li, Yi-Lin ; Chen, Hsin-Hung ; Chen, Yi ; Shiang, Hsien-Po ; Lee, Yumin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We design a complete baseband system of a high data rate packet-type OFDM receiver. For mobility support and channel-gain phase tracking, we propose a simple pilot tone insertion method that not only facilitates low-complexity channel gain tracking but also enables carrier frequency tracking. Besides, an efficient mechanism for packet boundary detection is also provided. In addition to channel gain tracking and packet boundary detection, timing synchronization, coarse frequency offset estimation, and fine frequency offset tracking issues are also discussed and simulated.
Keywords :
OFDM modulation; fading channels; frequency estimation; land mobile radio; multipath channels; packet radio networks; radio receivers; radio tracking; synchronisation; ISI; OFDM packet transmission; baseband system; channel gain tracking; channel-gain phase tracking; coarse frequency offset estimation; fine frequency offset tracking; high data rate; inter-symbol interference; low complexity channel gain tracking; low-complexity receiver design; mobile communication; mobility support; multipath fading; orthogonal frequency division multiplexing; packet boundary detection; packet-type OFDM receiver; pilot tone insertion method; simulation; timing synchronization; Baseband; Delay; Doppler effect; Fading; Frequency estimation; Interference; Modulation coding; OFDM; Sampling methods; Timing;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1188149
