Wcdma System Hsupa Physical Layer Technology Research And Simulation

HSUPA (High Speed Uplink Packet Access) is the optimization and evolvement for the packet business on the uplink.HSUPA is another important evolvement of WCDMA Standard, following the HSDPA (High Speed Downlink Packet Access).The dissertation reveals that the interrelated technology of physical layer in HSUPA.It mainly studies the arithmetic of the demodulation and power control in HSUPA, at the same time, according to the requirement of the 3GPP, builds the uplink and the downlink of the physical layer with the MATLAB.then finds one arithmetic which can impove the quality of the uplink and the downlink.Chapter 4 of this dissertation studies the channel estimation and compensation arithmetic in the uplink demodulation arithmetic of HSUPA. In the WCDMA Standard of the 3 th generation mobile communication, which adopts the pilots for parameter estimation of the fading channel on the uplink and the downlink. The pilots are time division multiplex in WCDMA. The data that the user have sended is comprised of the pilot segment and the information segment.The receiver deals with the receiving signal during the pilot.judging the real parameter of multi-path.The information segment which is between two pilot segment don't need to been tracked .So the estimation of channel parameter of the information in each slot only can be estimated by the pilot segment estimation with some arithmetic.Here simply introducing some arithmetic that can be considered.The channel estimation of 30 symbols (N=30) and the less symbols (such as N=20) has been simulated, at the same time, the link performance also is observed.According to the result of the simulation, it can be analyzed that it's better to adopt 30 symbols to estimate the channel parameter.Chapter 4 of this dissertation also studies the SIR estimation arithmetic on the E-DPCCH of HSUPA following the channel estimation arithmetic.It researches on the SIR estimation arithmetic in the reference^[16] at first,and then advances another improved SIR estimation arithmetic based on the SIR estimation arithmetic in the reference^[16].It compares the two SIR estimationg arithmetic on the link performance using the MATLAB.According to the result of the simulation,it can be seen that the improved SIR estimation arithmetic is much better than the SIR estimation arithmetic that is included in the resolution for the link: performance.Chapter 5 of this dissertation studies the downlink performance,mainly on E-HICH/E-RGCH/E-AGCH,which are added for HSUPA at the Node B.Because WCDMA is a power limited system,it need study the power control arithmetic of the downlink.It studies on the static power control arithmetic and the dynamic power control arithmetic for E-RGCH/E-HICH,and simulates above two power control arithmetic at three link scenes which are required by the protocol, a better power control arithmetic can be find at each link scene, thus the whole system's capability can be controlled effectively.