Title :
Complex-valued QR decomposition implementation for MIMO receivers
Author :
Salmela, Perttu ; Burian, Adrian ; Sorokin, Harri ; Takala, Jarmo
Author_Institution :
Dept. of Comput. Syst., Tampere Univ. of Technol., Tampere
fDate :
March 31 2008-April 4 2008
Abstract :
Multiple input multiple output (MIMO) transmission is an emerging technique targeted at 3G long term evolution (LTE) systems. One vital baseband function in MIMO receivers is QR decomposition of the channel matrix. In this paper, a processor based complex-valued QR decomposition is presented. The processor is enhanced with complex arithmetic and inverse square root function units. The proposed processor fits well with the real-time requirements of the MIMO receiver. The computing power is tailored for typical MIMO systems. Due to the generality of the applied computing resources it can also be used for other tasks. Also, the presented principles can be applied on any customizable processor architectures to accelerate QR decomposition.
Keywords :
3G mobile communication; MIMO communication; matrix decomposition; microprocessor chips; radio receivers; 3G long term evolution systems; MIMO receivers; MIMO systems; channel matrix; complex arithmetic units; complex-valued QR decomposition; customizable processor architectures; inverse square root function units; multiple input multiple output transmission; Application specific processors; Arithmetic; Baseband; Computer architecture; Hardware; Long Term Evolution; MIMO; Matrix decomposition; OFDM; Receiving antennas; MIMO; QR decomposition; TTA; processor;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4517889
