Design Of Signal Detection Algorithm For LTE Physical Uplink Control Channel

In recent years, wireless communication technology achieved a great development in theaspects such as raising the data transmission rate, lowering the system’s latency, expandingthe system’s capacity and coverage, in the mean time reducing operation cost. Long TermEvolution(LTE) started by3GPP is now the latest development of wireless communicationtechnology, which uses OFDM+MIMO as its core technology and brings new revolution totelecommunication industry. The3G technology TD-SCDMA has joined the trend of LTE byself evolution, and it’s adopted by more and more operators all over the world. Physicaluplink control channel(PUCCH) in LTE is used for transmitting the control information andthe HARQ feedback of users, the demodulation performance of PUCCH in eNode B greatlyinfluences the users’ experience.In this thesis, signal detection algorithm for LTE PUCCH is studied, and a newfrequency detection algorithm is proposed. The frequency detection algorithm separately usesthe received in the fields of reference signal and control information to estimate the power offrequency channel impulse response and noise, which increases the estimation precision. Andalso we calculate the DTX detection threshold by combining MRC and the detectionprobability theory, which makes the threshold robust. The design ideas, process and the wholeworkflows of the detection algorithm are described in detail in this thesis. Finally, a PUCCHsimulation platform which can be configured multiple users mode and single user mode isbuilt, and through link-level simulation, the proposed algorithm was proved to have goodperformance and achieve the design requirements.