Title :
Implicit MIMO Channel Estimation Without DC-Offset Based on ZCZ Training Sequences
Author :
Yuan, Weina ; Fan, Pingzhi
Author_Institution :
Inst. of Mobile Commun., Southwest Jiaotong Univ., Chengdu
Abstract :
In this letter, an implicit direct current (dc) free multiple-input multiple-output (MIMO) channel estimation scheme is proposed by employing a set of zero correlation zone (ZCZ) training sequences. The new implicit MIMO channel estimation scheme includes, as a special case, the conventional implicit single-input single-output (SISO) channel estimation scheme, which is also considered and analyzed. For implicit SISO channel estimation, by choosing properly a set of ZCZ sequences with balanced property, the harmful dc-offset can be completely removed, thus exhibiting significantly better estimation performance and resulting in simpler implementation when compared with the conventional implicit training schemes without dc-offset elimination and with dc-offset elimination based on perfect sequences, respectively
Keywords :
MIMO systems; channel estimation; sequences; MIMO channel estimation; SISO; ZCZ training sequence; multiple-input multiple-output system; single-input single-output system; zero correlation zone; Bandwidth; Channel estimation; Degradation; Equations; Error analysis; Estimation error; MIMO; Mobile communication; Polynomials; Statistics; Channel estimation; implicit training; multiple-input multiple-output (MIMO); single-input single-output (SISO); zero correlation zone (ZCZ) sequence;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2006.874435
