Abstract:
With the advancement of global positioning system (GPS), the transmitter can obtain the precise position of the receiver in the wireless communication system. This paper proposes a beamforming (BF) codebook design based on the receiver’s position information and analyses the outage performance of the system. Primarily, this work first derives the optimal BF power vector under the Rice fading channel from maximizing the received signal-to-noise ratio. Next, a codebook design scheme for uniform linear array (ULA) BF is proposed and a closed-form expression for the outage probability is derived. Finally, computer simulations are conducted to verify the effectiveness of the codebook scheme and examine the effects of relevant parameters on the system’s performance. The results show that the number of transmit antennas and the codebook length are larger, the array beam pointing are more accurate, which can improve the system’s outage probability and performance. The proposed algorithm is used for downlink preprocessing, and the codebook index can reduce the spend and dependence on signaling in the communication system.