[ahmetemir]

Hello,

I’m new on Vienna 1.9 Q2-2016 System Level Simulator. I’m reviewing scheduler codes to learn and modify. In original lteScheduler.m code, I’m very confused about k and d parameters. What do they mean? In lteScheduler.m lteScheduler function is present. There is assignment code in this function as:

  obj.k               = scheduler_params.k;
  obj.d               = scheduler_params.d;

I saw that inside Lte Config struct, scheduler_params struct can get value as fairness and av_window. I couldn’t figure out where scheduler_params got value k and d before above codes on original Vienna 1.9 project folder.

Could you give me advices please?

Best Regards..

• This topic was modified 3 years, 2 months ago by ahmetemir.
• This topic was modified 3 years, 2 months ago by ahmetemir.

[Fjolla Ademaj]

Dear ahmetemir,

Parameters k and d correspond to slope (k) and intercept (d) of a linear approximation of the BICM (Bit Interleaving and Coding Scheme) curves around the SNR regime relevant for a given CQI (Channel Quality Indicator).

If you are interested in more details about this approximation, the paper: S. Schwarz, Ch. Mehlführer and M. Rupp “Low Complexity Approximate Maximum Throughput Scheduling for LTE”; gives a nice explanation.

Best regards,
Fjolla

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