In WiMAX system,AMC is one of the key technologies to get good performance.

The High Speed Uplink Packet Access (HSUPA) technology includes Adaptive Modulation and Coding (AMC), Hybrid Automatic Repeat Request (HARQ), and Node B fast scheduling.

The characteristics, categories and performance of the technologies of adaptive modulation and coding (AMC), physical layer hybrid automatic repeat request (HARQ) and multiple input multiple output (MIMO) are detailed.

Combined with the adaptive modulation and coding technology,this algorithm reallocates the residual power by effectively utilizing the discrete modulation orders according to the different priorities of sub-channels under the limitation of quality of service over the block fading channel.

Adaptive Modulation and Coding (AMC) is one of the key technologies for High Speed Downlink Packet Access (HSDPA),and it can change the style of modulation and coding according to channel quality, thus reasonably using and allocating system resources.

Adaptive modulation and coding is a key link adap ta tion technology to overcome the time variable in wireless channel The l ink adaptation technology includes adaptive transmit power control, adaptive mod ulation and coding, adaptive frame length control etc This paper introduces two adaptive modulation and coding and analysis their merits and disadvantage

16e systems,a cross-layer optimization method was proposed,which efficiently combined the sub-packet transmission scheme at data link layer and the adaptive modulation and coding(AMC) at physical layer.

An scheme of Adaptive Modulation and Coding(AMC) based on Filtered Multi-tone(FMT),is proposed in this paper.

In order to design a wireless link adaptation technology with strong channel-error correction capability and high spectral efficiency,A LDPC-based adaptive modulation coding system model and related communication scheme are studied.

The paper firstly discusses the modifications on protocols, then describes in detail the key technology applied in HSUPA, such as Node B controlled scheduling, AMC, HARQ.

This paper proposes the stable threshold based AMC as a method for the dual - orthogonal sequences set bit - interleaved coded OFDM packet transmission in which parameters have the lowest SNR but higher than threshold and have the biggest throughput as sub carrier s modulation parameters, which makes up the coding diversity loss in the result of correl.

As to the time-varying characteristics of wireless channel, HSDPA and LTE system adopt adaptive modulation and coding (AMC) and hybrid ARQ as two main link adaptive technologies.

The scheme is scheduled through combining multi-level adaptive modulation and coding with hybrid automatic repeat request protocol.

This paper firstly proposes a point-to-point cross layer design based on adaptive modulation and coding(AMC)at physical layer and hybrid automatic repeat request(HARQ)at data link layer,and then provides an end-to-end cross layer design scenario by jointly considering transmission control protocol(TCP) at transport layer.