naa a22 4500 510795145 CHVBK 20180411083333.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11277-012-0672-9 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0672-9 Space-Time/Space-Frequency/Space-Time-Frequency Block Coded MIMO-OFDM System with Equalizers in Quasi Static Mobile Radio Channels Using Higher Tap Order [Elektronische Daten] [Bhasker Gupta, Davinder Saini] In 4G broadband wireless communications, multiple transmit and receive antennas are used to form multiple input multiple output (MIMO) channels to increase the capacity (by a factor of the minimum number of transmit and receive antennas) and data rate. In this paper, the combination of MIMO technology and orthogonal frequency division multiplexing (OFDM) systems is analyzed for wideband transmission which mitigates the intersymbol interference and hence enhances system capacity. In MIMO-OFDM systems, the coding is done over space, time, and frequency domains to provide reliable and robust transmission in harsh wireless environment. Also, the performance of space time frequency (STF) coded MIMO-OFDM is analyzed with space time and space frequency coding as special cases. The maximum achievable diversity of STF coded MIMO-OFDM is analyzed and bit error rate performance improvement is verified by simulation results. Simulations are carried out in harsh wireless environment, whose effect is mitigated by using higher tap order channels. The complexity is resolved by employing sphere decoder at the receiver. Springer Science+Business Media, LLC., 2012 MIMO-OFDM nationallicence STF coding nationallicence Diversity analysis nationallicence DFE nationallicence ML equalizer nationallicence Sphere decoder nationallicence Gupta Bhasker Department of Electronics and Communication, Jaypee University of Information Technology, 173215, Waknaghat, India aut Saini Davinder Department of Electronics and Communication, Jaypee University of Information Technology, 173215, Waknaghat, India aut Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1947-1968 0929-6212 69:4<1947 2013 69 11277 https://doi.org/10.1007/s11277-012-0672-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0672-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gupta Bhasker Department of Electronics and Communication, Jaypee University of Information Technology, 173215, Waknaghat, India aut NATIONALLICENCE 700 1- Saini Davinder Department of Electronics and Communication, Jaypee University of Information Technology, 173215, Waknaghat, India aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 69/4(2013-04-01), 1947-1968 0929-6212 69:4<1947 2013 69 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer