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Joint parallel interference cancellation (PIC) detection and power control scheme for multi-antenna systems is proposed in this paper. At the receiver, the Minimum Mean-Squared Error (MMSE) detector is utilized in the first stage, and its output is used to reconstruct the interference between antennas. Power control methods are proposed to help with the interference reconstruction at the receiver...
Cooperative communication improves the QoE of source user by using relay user to retransmit its information to the destination. As a result, the improvement of QoE in source user is at the price of decaying the QoE in relay user. However, the QoE of relay user has been concerned little so far. In this paper, a new power control scheme to improve QoE of relay user in cooperative system has been proposed...
This paper proposed a cooperative spectrum sharing game method applied to multi-cells cognitive radio system. The method is based on Nash Bargaining Solution (NBS) which can provide both efficient and fair resource sharing results. Path Gain Ratio (PGR) strategy has been applied to the multi-cells system as spectrum etiquette for user-pair selection. Simulation results have shown that the method given...
In this paper, we propose several power control schemes for MIMO systems using spatial multiplexing (SM) with a minimum mean square error (MMSE) receiver under slow fading, to improve the bit error rate (BER) performance, both for an individual link and within a cellular system. After comparing the performance of these proposed power control schemes, we find that a further scheme which effectively...
Two power control schemes for CDMA systems using a MIMO-based space-time signal processing technique, space-time mapping (STM), are proposed in this paper under slow fading scenarios, both for an individual link and in the presence of intra-cell interferers. Simulation results show that the proposed schemes provide a significant reduction in the bit error rate (BER) compared to that of no power control.
The uplink capacity of cellular systems, where the co-channel interference (CCI) limits the system capacity more than thermal noise, is investigated in this paper. We evaluate the overall system capacity under slow fading when space-time block codes (STBC) are employed. A power control technique suited for STBC is proposed to improve the bit error rate (BER) performance on the target link and the...
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