Section "Spatially adaptive modulation and coding" discusses the proposed algorithm for spatial adaptation in detail.
Link adaptation technique allows multi-rate transmission which is assumed to be achieved through adaptive modulation and coding.
Table 1 MCS table for adaptive modulation and coding Downlink MCS Required CINR (dB) Modulation Coding rate QPSK QPSK QPSK QPSK 16-QAM 64-QAM 64-QAM 64-QAM.
The receiver estimates the post-processing signal-to-noise ratio (ppSNR) to be used for adaptation and then, runs the spatially adaptive modulation and coding (SAMC) control algorithm to determine the antenna configuration and transmission rates.
A cross-layer queue-aware adaptive modulation and coding (AMC -based link AMC -based (linkmechadaptationroposed for this wireLAss link to imechanisme TCP-level throughput relatise to the case where AMC decisions are made based solely on the proposed layer (PHY) parameters.
Thus, the channel measurement reporting for channel adaptation mechanism (e.g., the power control and the adaptive modulation and coding) is usually carried out frame-by-frame basis.
On the other hand, MAC layer schedules the sensing and data transmission in accordance with the PRR based time slot allocation, while the PHY layer performs adaptive modulation and coding to allow data transmission rate adaptation.
The adaptive modulation and coding (AMC) process carried out in the link adaptation (LA) is a crucial part of current wireless communication systems.
Although adaptive modulation and coding in LTE partly alleviates this problem, the link adaptation capability is limited.
In this paper, we revisit the impact of CQI and NACK fabrications, and also the fabrication of ACK (which has been largely ignored in prior work), by jointly considering all known components such as adaptive modulation and coding (AMC), hybrid automatic repeat request (HARQ), outer loop link adaptation (OLLA) and PFS as a whole.
We propose a low complexity spatial adaptive modulation and coding (AMC) algorithm that uses the advantages of pattern reconfigurable antennas in concert with link adaptation to improve MIMO-OFDM link throughput.
