Beamforming for Cooperative Retransmission via User Relaying in Multiple Antenna Cellular Systems

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
The authors propose a novel cooperative user relaying scheme for a two-user multiple antenna downlink cellular system where each user has to receive a certain required amount of information. A user who successfully receives its required amount of information is supposed to help the other user in receiving its required amount of information through cooperative user relaying. For the proposed cooperative user relaying scheme, they jointly design linear beamformers at the Base Station (BS) over three transmission phases to minimize the total transmission time required for both users to receive their respective required amounts of information, which turns out to be approximated by equivalent to the maximization of the sum throughput.

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