Design of BS transceiver for IEEE 802.16E OFDMA mode

Wordwide interoperability for microwave access (WiMAX), or the IEEE 802.16d/e standard, is a technology for broadband wireless access (BWA) with significant market potential. In this paper, we propose a base station (BS) physical layer (PHY) transceiver solution for WiMAX orthogonal- frequency division-multiplexing access (OFDMA) mode. Our aim is to provide a single chip solution for baseband processing of WiMAX PHY. The data throughput should achieve 20 Mbps both for uplink and downlink. The solution is implemented on cell broadband engine, which is a multicore processor jointly developed by IBM, SONY and Toshiba for high performance computing(HPC). Algorithms for symbol timing offset, carrier frequency offset, channel estimation and space-frequency block code (SFBC) are embedded in this transceiver. Simulation and real test on Cell show that the proposed solution can fulfill the bit-error-rate (BER) requirements under most situations.