Title :
Interference Alignment via Improved Subspace Conditioning
Author :
Kim, Douglas ; Torlak, Murat
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA
Abstract :
For the K user, single input single output (SISO), frequency selective interference channel, a new low complexity transmit beamforming design that improves the achievable sum rate is presented. Jointly employing the interference alignment (IA) scheme presented by Cadambe and Jafar in and linear minimum mean square error (MMSE) decoding at the transmitters and receivers, respectively, the new IA precoding design improves the average sum rate while preserving the achievable degrees of freedom of the Cadambe and Jafar scheme, K/2.
Keywords :
array signal processing; decoding; interference (signal); least mean squares methods; radiocommunication; SISO; improved subspace conditioning; interference alignment; linear minimum mean square error decoding; precoding design; single input single output frequency selective interference channel; transmit beamforming design; Algorithm design and analysis; Array signal processing; Interference channels; Optimization; Receivers; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5683459
