Iterative Detection and Decoding with an Improved V-BLAST for MIMO-OFDM systems

Pilot Assignment Algorithm for Uplink Massive MIMO Systems

“…Multiple-input multiple-output (MIMO) 시스템은 무선 통신 기술의 많은 발전을 가져왔다 [1][2][3][4] . 최근 급 증하는 데이터 트래픽을 해결하기 위한 차세대 통신 기술로 Massive MIMO 시스템이 활발히 연구 되고 있다 [5,6] .…”

Recent Developments in Channel Estimation and Detection for MIMO Systems

“…The case of perfect-CSIR is also provided as reference. The simple spatial multiplexing scheme is used at the transmitter and MIMO signal detection is based on soft parallel interference cancellation (Soft-PIC) Sellathurai & Haykin (2002); Lee et al (2006). Results shown in Fig.…”

“…For this reason, suboptimal detection techniques are usually preferred. One interesting solution is that based on Soft-PIC and linear minimum mean-square error (MMSE) filtering Wang & Poor (1999); Sellathurai & Haykin (2002); Lee et al (2006), what we considered in Sections 2 to 4. In fact, in these parts, we considered in the iterative detector a sim- plified formulation of Soft-PIC, which assumes perfect interference cancellation after the first iteration.…”

“…where Note that the off-diagonal entries in Λ k,i and Λ k,i have been neglected to reduce the complexity without causing significant performance loss Lee et al (2006). At the first decoding iteration, we have no prior information available on the transmitted data, i.e., Λ k,i = σ 2…”

Dispensing with Channel Estimation: Differentially Modulated Cooperative Wireless Communications

“…Naturally, the reliability of demultiplexing these streams relies on the separability of the parallel MIMO streams, which may be achieved with the aid of the antenna-specific channel impulse responses (CIRs) in the presence of rich multipath propagation conditions. More explicitly, the CIRs become sufficiently different for distinguishing the MIMO streams for well-separated antennas [3,11,12]. On the other hand, the benefits of MIMO systems may also be exploited for mitigating the detrimental effects of multipath propagation with the aid of their transmit/recieve diversity gain, which is an explicit benefit of receiving multiple independently faded transmit signal replicas, in order to improve the attainable robustness [6,7,10].…”