Adaptive transmission mode selectionin LTE-acarrier aggregation scenarios

Author

Yang Yu ; Feiyan Yan ; Chaowei Wang ; Yinghai Zhang

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2011

fDate

14-16 Oct. 2011

Firstpage

281

Lastpage

286

Abstract

Carrier aggregation is one of the most distinct features of 4G systems including LTE-A (Long Term Evolution Advanced), which is being standardized in 3GPP as part of LTE Release 10. The closed-loop concept with codebook based precoding MIMO (multiple-input multiple-output) and transmission mode selection, termed as RI (rank indicator) selection, have been deployed in LTE-A systems to provide high system performance required by 4G systems. This article focuses on the study of adaptive transmission mode selection in LTE-A carrier aggregation scenarios. We propose an adaptive transmission mode selection scheme using average channel capacity and BER to maximize the average spectral efficiency (ASE) with a given target bit error ratio (BER). Numerical results demonstrate improvement over each fixed modern terms of average spectral efficiency.

Keywords

3G mobile communication; 4G mobile communication; Long Term Evolution; MIMO communication; error statistics; precoding; 3GPP; 4G systems; ASE; BER; LTE-A carrier aggregation scenario; Long Term Evolution advanced; adaptive transmission mode selection; average spectral capacity; bit error ratio; closed-loop concept; codebook based precodingMIMO; Carrier Aggregation; Closed-Loop; LTE-Advanced; RI; Transmission Mode Selection;

fLanguage

English

Publisher

iet

Conference_Titel

Communication Technology and Application (ICCTA 2011), IET International Conference on

Conference_Location

Beijing

Type

conf

DOI

10.1049/cp.2011.0675

Filename

6192871