Title :
Outage Behavior of Slow Fading Channels With Power Control Using Partial and Erroneous CSIT
Author :
Ekbatani, Siavash ; Etemadi, Farzad ; Jafarkhani, Hamid
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Irvine, CA, USA
Abstract :
This work investigates high-SNR outage behavior of slow fading channels with quantized feedback and partial power control, when feedback indices are error-prone. We propose a quantizer structure with continuous Voronoi regions and derive its optimality conditions using probability analysis. Our design involves construction of a novel bit-mapping scheme. The optimized power control codebook resembles channel optimized scalar quantizers (COSQs). Also, the diversity gain of the communication system under study is characterized with both nonzero and vanishing feedback error probabilities.
Keywords :
fading channels; feedback; power control; probability; CSIT; bit mapping scheme; channel optimized scalar quantizers; partial power control; probability; quantized feedback; slow fading channels; Diversity methods; Error probability; Fading; Noise measurement; Power control; Receivers; Signal to noise ratio; Binary symmetric channel; bit mapping; diversity gain; feedback; power control; scalar quantizer;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2010.2078991
