Title :
A simple scalable space-frequency coding scheme for MIMO-OFDM
Author :
Sampath, Hemanth ; Narasimhan, Ravi
Author_Institution :
Marvell Semicond., Sunnyvale, CA, USA
Abstract :
Several space-time and space-frequency coding schemes have been proposed in the literature for MIMO-OFDM. We present a linear space-frequency coding scheme based on permutation matrices; it is scalable with the number of antennas and spatial-multiplexing (SM) rate, and is easy to implement. Furthermore, the design allows for low cost power amplifier (PA) design. For SM rate 1, our space-frequency coding scheme is backwards compatible with legacy receivers using only 1 receive antenna. These features of our codes, named permuted space frequency codes, enable seamless deployment of multiple antenna OFDM transceivers in existing wireless networks with legacy single antenna transceivers.
Keywords :
MIMO systems; OFDM modulation; codes; diversity reception; matrix algebra; radio receivers; radio transmitters; transceivers; MIMO-OFDM; low cost power amplifier; multiple antenna OFDM transceivers; permutation matrices; permuted space frequency codes; receive diversity; receiver; scalable space-frequency coding scheme; space-time coding schemes; spatial-multiplexing rate; transmit diversity; transmitter; Block codes; Delay; Diversity methods; Maximum likelihood decoding; OFDM; Receiving antennas; Samarium; Transceivers; Transmitting antennas; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400086
