IEEE 802.11n MIMO Modeling and Channel Estimation Implementation

by Xin Xu

Institution: Linköping University
Year: 2012
Keywords: Simulink; MIMO; OFDM; STBC; Beamforming; MMSE detector; channel estimation; Engineering and Technology; Electrical Engineering, Electronic Engineering, Information Engineering; Teknik och teknologier; Elektroteknik och elektronik; Technology; teknik; Electronics Systems; Examensarbete i Elektroniksystem
Record ID: 1366556
Full text PDF: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81647


With the increasing demand of higher data rate for telecommunication, the IEEE802.11n standard was constituted in 2009. Themost important character of the standard is MIMO-OFDM, which not only improves the throughput but also the spectrumefficiency and channel capacity. This report focuses on the physical layer IEEE802.11n model. By utilizing an existingSimulink based IEEE802.11n system, functionalities like MIMO (up to 4*4), OFDM, STBC, Beamforming, and MMSEdetector are simulated. The results such as bit error rate, packet error rate and bit rate with different system settings are given.Furthermore, the channel estimation process is clarified, and a DSP builder based MMSE detector is realized, which can fulfillexactly the same function as the Simulink model.