Table 6 Ablation study: Tokens’ content and whether updating. U represents parameter update. The best and second best results are shown in bold and underlined.

From: Joint channel estimation and feedback with masked token transformers in massive MIMO systems

Method

zero+ U

randn+ U

zero+ w.o. U

randn+ w.o. U

64 bit

0.9015

0.9036

0.9023

0.9030

128 bit

0.9333

0.9315

0.9330

0.9348

256 bit

0.9648

0.9635

0.9618

0.9588