Space-time coded generalized spatial modulation-aided sparse code division multiple access (STC/GSM-SCDMA) is proposed, which exploits the two-dimensional transmit diversity potential of both and frequency domain. Hence, it constitutes a promising solution for pervasive connectivity devices in next-generation nonorthogonal (NOMA) systems. More explicitly, our STC/GSM scheme achieves spatial-dom...

An algorithm for time division multiple access (TDMA) is found to be applicable in converting existing distributed algorithms into a model that is consistent with sensor networks. Such a TDMA service needs to be self-stabilizing so that in the event of corruption of assigned slots and clock drift, it recovers to states from where TDMA slots are consistent. Previous self-stabilizing solutions fo...

Research department at Encsson Radw Systems. igital cellular andmicrocellularradio systems must incorporate multiple accessschemes that make efficient use of the allocated bandwidth and radio cell infrastructure with minimum cost and maximum performance 111. Time Division M u l l i ~ l e Access (TDMA) is thk multiple access techn6ue of choice for several digital cellular and PCS systcms. For ex...

A novel concept of time-reversal division multiple access (TRDMA) is proposed in [1] as a low-complexity, energy-efficient wireless multi-user access method. In this paper, we first generalize the work in [1] as a pre-filtering based space division multiple access (SDMA) communication system, where each user’s signature waveform is derived from the information of CIRs between basestation (BS) a...

Inter-symbol-interference (ISI) has become one of the major obstacle in achieving high speed and high capacity wireless communication. In this paper, we propose a time reversal transmission method which converges energy both in spatial and temporal domains and thereby reduces ISI. The system performances of multiple transmit antenna schemes using Time Reversal Division Multiple Access (TRDMA) i...