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Multiuser Receiver Scheme with SIC for PUCCH in High Speed Train Environment

Wei Wang, Guangliang Ren
2013 Communications and Network  
A multiuser receiver scheme with successive interference cancellation (SIC) is proposed to suppress multiuser interference for physical uplink control channel (PUCCH) in high speed train (HST) environment. In the proposed algorithm, each user's signal is detected iteratively in a descending order according to the signal strength at eNB. During each iteration, the strongest signal of all users' is detected and regenerated, and then is subtracted from the composite signal before decoding the next
more » ... e decoding the next user. Simulation results show that the proposed scheme obtains remarkable gains, e.g. 2 dB for PUCCH format 2 with 3 users in HST scenario 1. The improvement is more pronounced in the case of increasing number of users, e.g. 3.3 dB with 6 users. A PUCCH subframe consists of two 0.5ms slots, each of CN 311 PUCCH receiving. The improvement is more pronounced with increasing number of users. The proposed system is robust to multiuser interference and near-far resistance, which translates to significant increase in system capacity.
doi:10.4236/cn.2013.53b2057 fatcat:uj2ccqruurhmvf5rikraj4bkza