Macrocell Cooperation for OFDM-Based Broadcast-Packet Data Transmission in a Cellular Network

We propose a macrocell-coded cooperation method for orthogonal-frequency-division-multiplexing (OFDM)-based broadcast-packet services in a cellular network. The proposed method divides cells into different groups which transmit variations of the transmit-diversity-coded OFDM signal to improve the diversity order at the recipients. Analytically derived results are given to facilitate the design of a proper cooperation method, and extensive simulation results are also provided for practical applications. The results reveal that the proposed method can uniformly improve the cell-boundary performance and double the service coverage at the same power budget with only a slight modification of the conventional methods.