LTE Channel Estimation

1. What is channel estimation in LTE?
2. What is LS channel estimation?
3. What is channel estimation in MIMO-OFDM?
4. What is channel estimation and equalization?

What is channel estimation in LTE?

To facilitate the estimation of the channel characteristics, LTE uses cell-specific reference signals (pilot symbols) inserted in both time and frequency. These pilot symbols provide an estimate of the channel at given locations within a subframe.

What is LS channel estimation?

The least squares (LS) estimation is a common method for pilot-based channel estimation, as it offers good performance with reasonable complexity. In this paper, a pilot-based channel estimator design for a MIMO-OFDM system is described and two channel es- timator architectures are presented for the LS estimator.

What is channel estimation in MIMO-OFDM?

The channel estimation is carried out with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms. The performance of MIMO-OFDM system is evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level.

What is channel estimation and equalization?

Channel estimation provides information about distortion of the transmission signal when it propagates through the channel. This information is then used by equalizers so that the fading effect and/or co-channel interference can be removed and the original transmitted signal can be restored.