In this paper, we show that with the information of source constellation, the phase of the ambiguous scalar can be divided into a fractional part and an integer ...

ABSTRACT. Blind channel estimation is a promising technique to reduce the pilot overhead. Unfortunately, most existing algorithms suffer from the scalar ...

The resulting precoding matrix is employed in two different OFDM systems to estimate the channel frequency response vector up to scalar ambiguity. The proof ...

Thus, up to a scalar ambiguity factor, the channel gains for each subcarrier can be estimated by solving (2.13) and we call this as Antenna Relation Estimation ...

a channel blindly by subspace approach is known as scalar ambiguity, in which a scalar ... Petropulu, Ruifeng Zhang, Blind channel estimation for OFDM systems.

... scalar ambiguity. The proposed channel estimation method has low computational complexity and requires no prior statistical information on channel or noise.

[3] X. Wang, R. Liu, F. He, T. Yang, and B. Hu, “On scalar ambiguity in blind channel estimation for OFDM systems,” 2012 IEEE International Conference on ...

Scalar Ambiguity Estimation Based on Maximum Likelihood Criteria for Totally Blind Channel Estimation in Block Transmission Systems · Norisato SugaT. Furukawa.

Abstract—This study presents a novel subspace-based blind channel estimation method for reconfigurable intelligent surface.

The resulting precoding matrix is employed in two different OFDM systems to estimate the channel frequency response vector up to scalar ambiguity. The proof ...