Title :
Fast Codebook Index Searching Algorithm for a Quantized EGT in MIMO Systems
Author :
Park, Noe Yoon ; Kim, Young Ju ; Li, Xun ; Lee, Kwan Seob
Author_Institution :
Sch. of Electr. & Comput. Eng., Chungbuk Nat. Univ., Cheongju
Abstract :
A simple, effective, fast codebook index searching algorithm for quantized equal gain transmission (QEGT) in MIMO systems is presented. Rough searching based on the newly defined metric selects a few candidates, then, accurate searching based on the conventional method determines the optimal one. This strategy reduces the overall searching time, while maintaining almost the same link-level performance. Moreover, as the codebook size increases, the searching time is greatly decreased, compared to the conventional method.
Keywords :
MIMO communication; array signal processing; error statistics; fading channels; query formulation; space-time codes; MIMO systems; accurate searching; fast codebook index searching algorithm; quantized equal gain transmission; rough searching; Array signal processing; Diversity reception; Fading; Feedback; Fluctuations; MIMO; Performance gain; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073554
