Research On Multi-Input Multi-Output Continuous Phase Modulation Transmission Technology

With the development of application demands, how to design a new generation wireless communication system with high transmission efficiency and integrated anti-jamming ability becomes an urgent requirement. Since the advantages of high transmission efficiency and the high diversity gain and coding gain, multi-input multi-output (MIMO) technology has been focused on by the new generation wireless communication system. On the other side, continuous phase modulation (CPM) as a constant envelop technology, has the advantages of high spectral efficiency and high power efficiency, and the integrated anti-jamming ability. So, it is worthwhile to combine CPM with MIMO, and MIMO-CPM can take advantages of them, not only achieve high transmission efficiency and high transmission rate, but also get the integrated anti-jamming ability. Thus, it has been one of the optimum choices for the next generation wireless communication system.Under the support of Natural Science Foundation of China, considering the advantages of MIMO-CPM and the potential applications, the thesis discussed the space-time codes for MIMO-CPM systems, and emphasized on the signal detection, synchronization and channel estimation for the orthogonal space-time block coded CPM (OSTBC-CPM) systems.We first clarified the advantages, potential applications and research status of MIMO-CPM, under introducing the advantages, development and research status of the MIMO technology and CPM technology seperately.Then, we analyzed the principles of MIMO and CPM technologies separately. We established statistical models for MIMO channels, analyzed the capacity of the MIMO channel and the realization technique - space-time code, and also presented the standards for designing space-time codes with linear modulation. On the other side, we analyzed the CPM presentation, spectral density and minimum Euclidean distance, and emphasized on three different receiver structures for CPM demodulation, which was referencable to MIMO-CPM systems.After that, we laid stress on discussions of MIMO-CPM space-time coded systems. Starting from the channels suiting for MIMO-CPM systems, we clarified the design standards of space-time codes for MIMO-CPM systems. And we folded the space-time trellis codes (STTC), burst orthogonal space-time block codes (BOSTBC) and orthogonal space-time block codes (OSTBC) of it, analyzed the performance and simulation results. We also stressed the OSTBC-CPM systems, spread the original space-time codes, improved the non-coherent demodulation, and presented the simulations under different channels.At last, we focused on the signal detection, synchronization and channel estimation for the OSTBC-CPM system. According to the OSTBC-CPM signal, we adopted a detection algorithm called local serial correlation; inducted spectral estimator and maximum likelihood estimator for synchronization, and compared the two algorithms on complexities and performances; and put forward channel estimation for OSTBC-CPM systems with the use of the orthogonality.