Title :
Transmission with limited feedback in MIMO-OFDM relaying systems
Author :
Zhang, Ran ; Yang, Ruizhe ; Sun, Yanhua ; Zhang, Yanhua
Author_Institution :
Coll. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
This paper considers two hop MIMO-OFDM AF relaying systems with separate power constraint at source and relay. In order to maximize the system capacity, the adaptive transmission is realized by two steps of beamforming with equal power and then power allocation. For the limited feedback scenario, we utilize the Grassmannian beamforming codebooks as the source and relay beamforming codebooks and design the power allocation codebook based on Lloyd´s algorithm. Simulations show the advantages of the proposed scheme in the system performance and feedback load.
Keywords :
MIMO communication; OFDM modulation; array signal processing; feedback; Grassmannian beamforming codebooks; Lloyd algorithm; MIMO-OFDM relaying systems; adaptive transmission; limited feedback scenario; power allocation codebook; power constraint; relay beamforming codebooks; source beamforming codebooks; system capacity; Algorithm design and analysis; Array signal processing; MIMO; OFDM; Relays; Resource management; Signal processing algorithms; codebook; limited feedback; power allocation;
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
DOI :
10.1109/CISP.2010.5646772
