Rotation matrices for OFDM transmission

Author

Seguro, José ; Gomes, Paulo ; Souto, Nuno ; Correia, Américo ; Dinis, Rui

Author_Institution

Inst. de Telecomun., Lisbon, Portugal

fYear

2011

fDate

27-29 April 2011

Firstpage

1

Lastpage

4

Abstract

We consider signal space diversity based on Complex Rotation Matrices (CRM) known to provide good performance gains over uncorrelated Rayleigh fading channels. OFDM/OFDMA signals based on LTE-A parameters are combined with CRM, spatial multiplexing (MIMO), Turbo or LDPC codes. It is shown that CRM outperform RRM (Real Rotation Matrix), as well as HM (Hadamard Matrices). The gains are especially high for the uncoded case, but we still have noticeable gains in the coded case, especially for high code rates.

Keywords

Hadamard matrices; Long Term Evolution; MIMO communication; OFDM modulation; Rayleigh channels; frequency division multiple access; parity check codes; space division multiplexing; turbo codes; CRM; HM; Hadamard matrices; LDPC code; LTE-A parameter; MIMO; OFDM-OFDMA signals; RRM; Rayleigh fading channel; complex rotation matrices; real rotation matrix; spatial multiplexing; turbo code; Bit error rate; Discrete Fourier transforms; MIMO; OFDM; Parity check codes; Receiving antennas; Transmitting antennas; CRM; OFDM; Signal Space Diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE

Conference_Location

Lisbon

Print_ISBN

978-1-4244-7486-8

Type

conf

DOI

10.1109/EUROCON.2011.5929203

Filename

5929203