2019/07/22 by Anu Jagannath, Jagannath, Anu, Jithin Jagannath +3
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Communication Techniques #FOS: Computer and information sciences #Information Theory (cs.IT) #Networking and Internet Architecture (cs.NI) #Wireless Communication Networks Research
paper · pdf · doi:10.48550/arxiv.1907.09545
openalex publication_date 2019/07/22 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28
The upcoming 5G networks demand high-speed and high spectral-efficiency\ncommunications to keep up with the proliferating traffic demands. To this end,\nMassive multiple-input multiple-output (MIMO) techniques have gained\nsignificant traction owing to its ability to achieve these without increasing\nbandwidth or density of base stations. The preexisting space-time block code\n(STBC) designs cannot achieve a rate of more than 1 for more than two transmit\nantennas while preserving the orthogonality and full diversity conditions.\n In this paper, we present Jagannath codes - a novel complex modulation STBC,\nthat achieves a very high rate of 2 for three and four transmit antennas. The\npresented designs achieve full diversity and overcome the previously achieved\nrates with the three and four antenna MIMO systems. We present a detailed\naccount of the code construction of the proposed designs, orthogonality and\nfull diversity analysis, transceiver model and conditional maximum likelihood\n(ML) decoding. In an effort to showcase the improvement achieved with the\npresented designs, we compare the rates and delays of some of the known STBCs\nwith the proposed designs. The effective spectral efficiency and coding gain of\nthe presented designs are compared to the Asymmetric Coordinate Interleaved\ndesign (ACIOD) and Jafarkhani code. We presented an effective spectral\nefficiency improvement by a factor of 2 with the proposed Jagannath codes.\nOwing to the full diversity of the presented designs, we demonstrate\nsignificant coding gains (6 dB and 12 dB) with the proposed designs.\n