Enhanced Data rates for Global Evolution (EDGE) provides an evolutionary path from existing cellular systems such as Global System for Mobile Communications (GSM) for delivering higher bit rate services that facilitate wireless Internet access. Thus, EDGE only defines a new radio access technology to achieve higher bit rates. This paper investigates the performance of Transmission Control Protocol/Internet Protocol (TCP/IP) over the enhanced packet-switched transmission mode of EDGE, i.e., Enhanced General Packet Radio Service (EGPRS). The Network Simulator (ns) tool was used in the simulation. The performance of TCP was examined under various channel conditions with and with-out the link adaptation scheme of EGPRS. The link adaptation scheme improves the TCP performance under poor channel conditions.
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