Transmit Beamforming in WiMAX-2
WiMAX 2 is a key component of the 4G wireless system. Among many new techniques adoptedin WiMAX 2, transmit beamforming plays an essential role in delivering mobile broadbandservice reliably over an extended coverage. It enhances the received signal quality byexploiting the channel knowledge at the transmitter. In practice, channel feedback isrequired for the base station to acquire the channel knowledge. Since the channelfeedback consumes a large overhead, several schemes were proposed in the IEEE 802.16mtask group for efficient feedback. In this talk, we provide a survey on the interestingtechniques in considered in the task group for WiMAX 2 with an emphasis on practicalengineering considerations.
Biography:Qinghua Li received the Ph.D. degree in E.E. from Texas A&M University, College Station,Texas, in 2001. Since Feb. 2001, he has been with Intel's wireless research groupconducting research for WiMAX, 60 GHz, LTE, and WiFi, UWB systems. His interests lie inthe areas of beamforming, relay, interference mitigation, channel modeling, andmultiuser detection, where he coauthored more than 100 issued/pending patents.