Figure 7
From: Low-complexity WLMMSE channel estimator for MB-OFDM UWB systems
BER vs. SNR of WLMMSE and Lr-RWLMMSE estimators for \( \boldsymbol{\upvarepsilon} \mathbf{\in}\left\{\begin{array}{ccc}\hfill \mathbf{0.3},\hfill & \hfill \mathbf{0.5},\hfill & \hfill \mathbf{0.7}\hfill \end{array}\right\} \) over CM2 channel model. BER, bit error rate; WLMMSE, widely linear minimum mean square error; Lr-RWLMMSE, low-rank real-valued widely linear minimum mean square error.