Title :
Rotation matrices for OFDM transmission
Author :
Seguro, José ; Gomes, Paulo ; Souto, Nuno ; Correia, Américo ; Dinis, Rui
Author_Institution :
Inst. de Telecomun., Lisbon, Portugal
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;
Conference_Titel :
EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE
Conference_Location :
Lisbon
Print_ISBN :
978-1-4244-7486-8
DOI :
10.1109/EUROCON.2011.5929203
