Relay deployment in orthogonal frequency division multiple access (OFDMA) based cellular
networks helps in coverage extension and/or capacity improvement. To quantify capacity
improvement, blocking probability of voice call is typically calculated using Erlang B formula.
This calculation is based on the assumption that all users require same amount of resources
to satisfy their rate requirement. However, in an OFDMA system, each user requires different
number of subcarriers to meet its rate requirement. This resource requirement depends on …