Dear Roesdiade,
Our simulator has a feature to compress or not the results file, depending on which parameters do you want to save. In your case, in the main launcher file, you have to set LTE_config.compact_results_file = false -> no compression, meaning that it will also save the BLER values. If you set LTE_config.compact_results_file = 1, less parameters will be saved. For more detials on that you can check the file LTE_sim_main.m and modify it depending on which parameters do you want to save.
Best regards,
Fjolla