好像大家都说OFDM将是未来的重要技术，一夜间，这个老技术好像焕发了青春。那就看看ofdm的历史吧。

1957: Kineplex, multi-carrier HF modem

1966: Chang, Bell Labs: OFDM paper + patent

1971: Weinstein & Ebert proposed use of FFT and guard interval

1985: Cimini describeed use of OFDM for mobile communications

1987: Alard & Lasalle: OFDM for digital broadcasting

1995: ETSI DAB standard: first OFDM based standard

1997: ETSI DVB-T standard

1998: Magic WAND project demonstrates OFDM modems for wireless LAN

1999: IEEE 802.11a wireless LAN standard (Wi-Fi)

2000: proprietary fixed wireless access (V-OFDM, Flash-OFDM, etc.)

2002: IEEE 802.11g standard for wireless LAN

2004: IEEE 802.16-2004 standard for wireless MAN (WiMAX)

2004: ETSI DVB-H standard

2004: Candidate for IEEE 802.15.3a standard for wireless PAN (MB-OFDM)

2004: Candidate for IEEE 802.11n standard for next generation wireless
LAN

2005: Candidate for 3.75G mobile cellular standards (3GPP & 3GPP2)

2005: Candidate for 4G standards (CJK)