Measurement based evaluation of low complexity receivers for D-TxAA HSDPA

In 2007, the 3GPP agreed to standardize D-TxAA (Dual Stream Transmit Antenna Array) as the MIMO extension for HSDPA (High Speed Downlink Packet Access). In this work, we examine receiver structures for D-TxAA. At a high SINR, D-TxAA operates in the dual stream mode, i.e. two independent data streams are transmitted to one user simultaneously. In this mode, our receiver uses equalization and optional interference cancelation. At a low SINR, D-TxAA operates in single stream mode, in which several users can be served simultaneously, and hence an interference aware equalizer is necessary to achieve high performance. Utilizing these receiver structures, we measure the average throughput of D-TxAA in outdoor-to-indoor scenarios in the inner city of Vienna.