Title :
A Scaled Hard Interference Cancellation Scheme in an Uplink Multicell Environment
Author :
Ilgyu Choi ; Chungyong Lee
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We propose a new interference cancellation (IC) scheme for an uplink multicell environment to reduce error propagation with low backhaul use. The proposed scheme shares one real value scaler in addition to hard symbols through backhaul, which minimizes residual interference variance. Although the proposed scheme requires almost the same amount of backhaul use as the conventional HIC scheme, its performance is close to the performance of the conventional soft IC scheme, particularly for high modulation order. We also derive the received signal-to-noise-and-interference ratio (SINR) of the proposed scheme to use adaptive modulation. Simulation results show that our SINR analysis is accurate and that adaptive modulation operates well under a target bit error rate (BER).
Keywords :
adaptive modulation; cellular radio; error statistics; interference suppression; radiowave propagation; BER; adaptive modulation; bit error rate; conventional soft IC scheme performance; error propagation reduction; hard symbol; high modulation order; low backhaul use; received SINR; received signal-to-noise-and-interference ratio; residual interference variance minimization; scaled hard interference cancellation scheme; uplink multicell environment; Interference cancellation; Performance analysis; Quadrature amplitude modulation; Signal to noise ratio; Uplink; BS cooperation; Base station (BS) cooperation; CoMP; SINR; coordinated multipoint; interference cancellation; interference cancellation (IC); performance analysis; signal-to-noise-and-interference ratio (SINR); uplink;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2014.2386864