Title :
An overview of multi-mode multi-user adaptation and scheduling techniques in mimo-based fourth-generation wireless systems
Author_Institution :
Ruppin Academic Center, Israel
Abstract :
MIMO-OFDM is widely recognized today as a key combination of technologies to achieve high spectral efficiency and high link reliability over space and frequency selective wireless channels, at a reasonable hardware cost. Both OFDM and MIMO have a variety of modes of operation and parameters and for each channel state, users¿ requirements of data transmission and criterion of estimation performance, there is an optimal scheme and set of parameters based on channel state information. Adaptive switching between MIMO-OFDMA schemes yields significant capacity gains over fixed transmission schemes. A combination of modulation and coding scheme and MIMO method maximizes the throughput whilst satisfying a predefined average BER.
Keywords :
4G mobile communication; MIMO communication; OFDM modulation; channel capacity; channel coding; error statistics; frequency division multiple access; scheduling; spectral analysis; telecommunication network reliability; wireless channels; MIMO-OFDMA scheme; adaptive switching algorithm; bit error rate; channel state information; fixed transmission scheme; fourth-generation wireless system; frequency selective wireless channel capacity; high link reliability; high spectral efficiency; modulation-coding scheme; multi mode multiuser adaptation; scheduling technique; Channel state information; Costs; Data communication; Hardware; MIMO; Modulation coding; OFDM; Space technology; State estimation; Throughput; Adaptive MIMO; OFDMA;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 2008. IEEEI 2008. IEEE 25th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4244-2481-8
Electronic_ISBN :
978-1-4244-2482-5
DOI :
10.1109/EEEI.2008.4736629
