A Rate Allocation Algorithm in Uplink SC-FDMA Systems for Enhancing Network Throughput
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 4
Abstract
For a cellular system where mobile terminals transmit in the uplink to base stations (BSs) using single carrier- frequency division multiple access (SC-FDMA), we consider mul- ticell processing among BSs. Received signals are first quantized on a per-subcarrier basis and then forwarded to the serving BS on a backhaul with limited rate. With the aim of maximizing the network throughput we d es i g n an efficient composite signal representation and b) propose a rate allocation algorithm for the backhaul. Using a closed-form expression of the achievable throughput in the presence of quantization noise, an iterative greedy algorithm for the backhaul rate allocation is developed, where at each iteration we select the signal to be exchanged as the one providing the maximum network throughput increase per backhaul bit. In order to determine how many quantization bits are used for each received signal, we consider either a static bit allocation with a fixed number of bits, or a dynamic bit allocation (which ensures a predetermined network percentage throughput loss with respect to the unquantized case). In an LTE scenario, it is seen that the proposed bit allocation methods flexibly adapt to channel and backhaul conditions and yield similar performance, hence the static approach is preferred due to its lower complexity.
Authors and Affiliations
M Komathy, V Bharathi
Keywords
Related Articles
- EP ID EP20263
- DOI -
- Views 256
- Downloads 4
Suggestion of Traffic System for Various Places in Miraj City on The Basis of SATIS Project (Thane)
This project relates with the decongestion of the traffic in the three main areas of Miraj city, namely City Stand, Heera Chowk and Gandhi Chowk. Out of these two areas of highest traffic density, for the area of City...
Analysis and Synthesis of Geneva Wheel for Automation of Conventional Paper Cutting Machine
Trying out design and manufacturing of Geneva wheel with help of laser cutting machines for jerk less and intermediate motion. Geneva drive is an indexing mechanism that converts continues motion to intermittent motion....
Review Paper on Brake Shoe Failure
Brake shoe is the component which is mainly used in braking system. Indian railway braking system is one of the complex and high maintenance processes system. Mainly due to the less quality material of the brake shoe us...
Railway Fault Detection System using Mobile Communication and Sensor Technology
This paper proposes a cost effective yet robust solution to the problem of railway crack detection, obstacle detection and fire detection utilizing a method that is unique in the sense that while it is simple, the idea...
Influence of Drying Method on Total Flavonoid Content of Phalsa (Grewia asiatica) Fruit
This study aimed to assess the effects of thermal drying (tray drying) and non-thermal drying (freeze drying) on the total flavonoid content (TFC) of tall and dwarf cultivars of phalsa (Grewia asiatica) fruit. Before an...