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 284
- Downloads 4
A Review Of Clinical Data Prediction Using Different Data Mining Technique And Neuro-Fuzzy System
The diagnosis of clinical data is a major issue in the automation system. The automation system increases the efficiency and reliability of prediction of symptoms. In this paper presents the review of different techniqu...
Development of an Inbuilt UHF Signal and Weather Parameters Measuring System
This paper presents the development of an inbuilt measuring system suitable for measuring UHF signal strength and weather parameters concurrently for accurate prediction of the effects of weather parameters on UHF radio...
Analyze and Design of Sewer System in Randal Village as a Case Study
A detailed study on domestic waste water characterization has been performed followed by the design of sewage treatment The present study involves the analysis of pHvalue, total solids, total suspended solids, hardness,...
slugWerner Method for Buried Spherical Sources Depth Determination from Residual SP Data
Self-potential method is an electrical method that involves measurements of naturally occurring potentials, commonly associated with the weathering of sulfides ore bodies. magnetic and gravity data have been adapted to...
Efficient Route Query Processing with Arbitrary Order Constraints Providing Optimal Solution
The optimal route query finds the shortest path starting from the query point from a given set of spatial points DS. These points are associated with some categorical information e.g., restaurant, pub, etc.,. This cover...