Kravchuk S. Throughput rising methods of broadband radio access telecommunication systems

In work the important scientific problem of substantial increase of throughput (capacity) of broadband radio access systems (BRAS) with maintenance of a necessary noise stability is investigated by improvement of its strip resource at a rational variation a power resource that has found the display in development of theoretical bases of BRAS functioning processes by means of development of a complex of new methods, algorithms, mathematical models and revealing of new behaviors of influence of parameters of BRAS radiochannels on its throughput. Methods and models for increase of spectral efficiency BRAS by application of spatial multiplexing and diversity, and also space-time coding are proposed: methods of linear spatial transformation for optimization of transmitted capacity and channel rating OFDM at spatial-time- frequency coding, model throughput and error probability for BRAS with cooperative МIМО-retransmission, imitating models of a radiochannel of МIМО-system, behavior of influence of users amount on throughput of multiuser BRAS with МIМО-channels, reduction methods of interfering signal influence in the multiuser МIМО-system. Methods and models for improvement of a bandwidth resource in multiservice BRAS by management of bandwidth resource distribution are proposed: model of the differentiated services, model of service distribution for the circuit of the bandwidth requirement, model of system on base OFDMA with cooperative retransmission, the circuit of capacity optimum distribution for multiservice system. Approaches and models for realization of expansion of BRAS bandwidth resource by transition to work of system in millimeter wave band (MMWB) are proposed, that has enabled to develop new convergent microcellular architecture of physical and channel levels of BRAS MMWB with the purpose of achievement downlink throughput of units of gigabits per second. The results of the dissertation are introduced at creation and expansion of some projects of broadband access s wireless systems and their microwave equipment.