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 294
- Downloads 4
Math-Phobia: Causes and Remedies
The article examines the causes and remedies of poor mathematics teaching and learning in primary and post‐primary schools and recommends measures to overcome them. Among the root causes of mathematics phobia in schools...
A Review – Shear and Pullout behaviours of steel Fiber Reinforced Concrete on Elevated Temperature
This paper presents the study of the shear and pullout behaviours of steel fiber reinforced concrete (SFRC) with partial replacements of fine aggregate with copper slag subjected to elevated temperature. Since the shear...
Resource Allocation in Cloud Environment-A Review
Cloud Computing helps us to utilize the facilities of multiple applications such as web conferencing, games, E-mail on the Internet. With cloud computing we can create and configure the applications online. It also help...
Autonomous Robot for Identification of Soil Parameters and Collecting Scrap from Farm
According to UNICEF solid waste can be classified into biodegradable and non biodegradable. Non biodegradable wastes cannot be decomposed by biological process. Plastics and other metals in agricultural field cause many...
A Load Balanced Data Collection Framework for Wireless Sensor Network Using Dual Data Uploading and Polling Technique
The concept is to gather data from different mobiles in wireless sensor network. To achieve this, three layers of frame work is used. They are sensor layer, cluster head layer, mobile collector layer. This framework emp...