Performance analysis of varying the link adaptation BLER switching point in EGPRS

This paper examines the impact of the choice of the link adaptation BLER switching point on the performance of Enhanced General Packet Radio Service (EGPRS) Phase I, with the aim of determining the optimum switching point. The analysis is carried out by considering outputs from a system level simulator and a system dimensioning and planning tool. Results are presented for both LA and IR for a range of LA switching points. A GSM macrocellular environment, having an interference-limited 4/spl times/3 re-use pattern, was chosen. The mobiles operate with perfect receivers in a variety of radio channel conditions.