2016/05/06 by Kasper Fløe Trillingsgaard, Petar Popovski, Trillingsgaard, Kasper Fløe +1
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT)
paper · pdf · doi:10.48550/arxiv.1605.01829
openalex publication_date 2016/05/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Cellular wireless systems rely on frame-based transmissions. The frame design\nis conventionally based on heuristics, consisting of a frame header and a data\npart. The frame header contains control information that provides pointers to\nthe messages within the data part. In this paper, we revisit the principles of\nframe design and show the impact of the new design in scenarios that feature\nshort data packets which are central to various 5G and Internet of Things\napplications. We treat framing for downlink transmission in an AWGN broadcast\nchannel with K users, where the sizes of the messages to the users are random\nvariables. Using approximations from finite blocklength information theory, we\nestablish a framework in which a message to a given user is not necessarily\nencoded as a single packet, but may be grouped with the messages to other users\nand benefit from the improved efficiency of longer codes. This requires changes\nin the way control information is sent, and it requires that the users need to\nspend power decoding other messages, thereby increasing the average power\nconsumption. We show that the common heuristic design is only one point on a\ncurve that represents the trade-off between latency and power consumption.\n