Title :
On the effect of channel estimation error with superimposed training upon information rates
Author :
Vosoughi, Azadeh ; Scaglione, Anna
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY
Abstract :
Adopting affine precoding as the transmission strategy, we investigate the effect of channel estimation error on the mutual information between the input and the output of a frequency selective fading MIMO channel. For Bayesian receivers which perform joint channel and symbol estimation there is asymptotically no loss in information rate. In contrast, for the receivers which obtain the channel estimation and use it to estimate the symbols, the lower bound on information rate is maximized by enforcing a form of orthogonality between symbols and training
Keywords :
MIMO systems; channel estimation; fading channels; Bayesian receivers; adopting affine precoding; channel estimation error; frequency selective fading MIMO channel; mutual information; symbol estimation; Bayesian methods; Channel estimation; Computer errors; Covariance matrix; Decoding; Fading; Frequency estimation; Information rates; MIMO; Mutual information;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365353
