Improving uplink LTE performance with modulation-aware iterative equalization

Author

Krzymien, Lukasz ; Schlegel, Christian ; Zhang, Shuai

Author_Institution

High Capacity Digital Commun. Lab., Univ. of Alberta, Edmonton, AB, Canada

fYear

2010

Firstpage

1

Lastpage

5

Abstract

Equalization for uplink MIMO SC-FDMA LTE multi-stream transmission is considered utilizing modulation-aware iterative matrix inversion method. This equalizer jointly removes inter-symbol (ISI) as well as inter-stream interference. It is observed that gains over traditional frequency-domain equalization can be obtained. Additionally, receiver performance for unequal power assignments between the data streams improves as compared to equal power allocation, which is opposite to the case of linear MMSE equalization. It is shown that signal co-existence is possible with this methodology, which considerably improves the system´s spectral efficiency.

Keywords

Long Term Evolution; MIMO communication; equalisers; frequency division multiple access; intersymbol interference; iterative methods; modulation; MIMO SC-FDMA LTE multi stream transmission; interstream interference; intersymbol interference; modulation aware iterative equalization; signal co-existence; uplink LTE performance; Equalizers; Frequency division multiaccess; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications (SPAWC), 2010 IEEE Eleventh International Workshop on

Conference_Location

Marrakech

ISSN

1948-3244

Print_ISBN

978-1-4244-6990-1

Electronic_ISBN

1948-3244

Type

conf

DOI

10.1109/SPAWC.2010.5671034

Filename

5671034