Next generation wireless for rural areas
01 Jan 2007-
TL;DR: The economic growth has taken place concurrent to India's explosive growth in communications and to a significant extent, fueled by it as mentioned in this paper, which has helped business in all kinds of ways, propelling the Indian economy.
Abstract: India has emerged as a significant force around the world, fueled by its rapid growth over the last decade. The economic growth has taken place concurrent to its explosive growth in communications and to a significant extent, fueled by it. India used to add less than one million telephones a year in the early nineties. Now it adds six million per month. It is the wireless technology (both fixed wireless as well as mobiles), which has made telecommunication affordable in India, fueling the growth. This has helped business in all kinds of ways, propelling the Indian economy.
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TL;DR: The design and implementation of OFDM system along with SLM implementation to reduce PAPR(6) is illustrated and a detailed simulation of the OfDM system with 16-QAM results show 2dB reduction in the peaks.
Abstract: OFDM is a modulation as well as multiplexing technique which is widely used in various high speed mobile and wireless communication systems because of its capacity of ensuring high level robustness against interference. In this paper the design and implementation of OFDM system along with SLM implementation to reduce PAPR(6)is illustrated and a detailed simulation of the OFDM system with 16-QAM. OFDM transceiver is implemented using FPGA Spartan6 kit. The hardware results show a detailed study of RTL schematics and Test Bench. In this paper, the software simulation results show 2dB reduction in the peaks. Keywords - Field Programmable Gate Array, Matlab Simulink, Orthogonal Frequency Division Multiplexing , Peak-to-Average Power Ratio, Selective level Mapping and Xilinx
8 citations
TL;DR: The Broadband to Empower Rural India (BEE2E) project as mentioned in this paper aims to provide broadband access to rural India through the provision of a broadband network in rural India.
Abstract: (2007). Broadband to Empower Rural India. IETE Technical Review: Vol. 24, No. 4, pp. 195-201.
3 citations
Cites background from "Next generation wireless for rural ..."
...*The paper is based on and borrows from some recent articles on Telecom in rural India [1-3]....
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01 Jan 2014
TL;DR: This paper limited its comparision to different wireless technologies like Wi-Fi, Wimax, CDMA450 and VSAT technologies, for deployment at a telecenter, with a motive to reach social goals such as e-education, telemedicine, elivelihood, virtual agriculture etc.
Abstract: Optimisation of ICT brings measurable changes for development of a country. Initiation of telecenters, bridges the digital divide in rural areas, by empowering social interactions and networking among people. Internet connectivity is essential to enable services in telecenters. Among different wired and wireless connectivity options, selection of suitable technology for rural deployment is a must. In this paper, we limited our comparision to different wireless technologies like Wi-Fi, Wimax, CDMA450 and VSAT technologies, for deployment at a telecenter, with a motive to reach social goals such as e-education, telemedicine, elivelihood, virtual agriculture etc. Comparision of wireless technologies is done using multicriterion ‘decision making analysis tool’ AHP (Analytical Hierarchy Process) to obtain a technology that better suits rural settings. Several attributes under the category of technical, social, environmental and economical aspects are taken for optimal comparision of wireless technologies.
1 citations
Journal Article•
TL;DR: This paper proposes an SLM technique which gives sizable reduction of nearly 2dB in high peak-to-average power ratio of the transmitted signal and elaborates the hardware implementation of the generated block using FPGA.
Abstract: High peak-to-average power ratio (PAPR) of the transmitted signal is a major drawback of orthogonal frequency division multiplexing (OFDM). Selected mapping (SLM) technique is one of the promising PAPR reduction techniques for OFDM. In the SLM technique, statistically independent data blocks are generated from an OFDM data block using a set of phase sequences and one with the lowest PAPR is chosen and transmitted. In this paper, we propose an SLM technique which gives sizable reduction of nearly 2dB. The paper elaborates the hardware implementation of the generated block using FPGA. The test benches and the RTL schematic are generated.
1 citations
Journal Article•
TL;DR: This research aims to implement a MIMO OFDM baseband transceiver on an FPGA by proper selection of one of the sixteen configurations to fulfill the need of faster data transmission on a wireless communication system with comparatively low prices of hardware implementation.
Abstract: Since time immortal humans were and are always in search of simplest and the most effective mode of communication systems. Whether it is speech or gadgets used to process in the form of information or data.Similarly in telecommunication there is always need of fast data transfer thereby increasing the need of larger bandwidth and the technologies used to achieve the desired goal .Hence OFDM has been introduced for many existing and future communications systems throughout the world. It is well suited for systems in which the channel characteristics make it difficult to maintain ample amount of communications link performanc . In addition to high speed wireless applications, wired communication systems such as asynchronous digital subscriber line (ADSL) and cable modem uses OFDM as its underlying technology to provide a technique for delivering high-speed data communication. In this research , Our main aim is to implement a MIMO OFDM baseband transceiver on an FPGA by proper selection of one of the sixteen configurations to fulfill the need of faster data transmission on a wireless communication system with comparatively low prices of hardware implementation Moreover the implementation on FPGA is better than on a general purpose MPU in terms of speed and on ASIC in terms on cost.FPGAis having the flexibility of reconfiguring by the base station to meet future requirements. This section deals with discussions and analysis on the simulation results that are obtained till date with the standard results in the future research area in order to achieve high throughput. This investigation focus on the design of project and its model development using matlab Simulink, Xilinx and then implementing it on FPGA. This includes understanding of OFDM, its spectrum, symbol structure, and its applications.
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01 Jun 2007
TL;DR: Broadband services can be best provided in rural India using wireless technology using DECT and IEEE 802.11 (WiFi), and Broadband corDECT and WiFiRe systems are, respectively, examples thereof, which have been proven in rural deployments and shown to provide a feasible solution.
Abstract: Broadband services can be best provided in rural India using wireless technology. Given modest income levels, internet-based services are accessible to most of the rural populace only through a kiosk model of delivery. Such services call for a wireless system that can provide at least 256 kbps in a sustained manner, to each of around 200 villages within a radius of 20 km from an Internet POP (Post Office Protocol). The challenge, however, is to do this at a cost per connection of under US$ 250 for the wireless equipment, in order to make the kiosk a viable business. Emerging wide-area broadband wireless technologies such as those based on the IEEE 802.16 (WiMAX) standard, when mature, may meet these performance and cost requirements. If broadband services are to be provided today, and at an affordable cost, one has to look for innovative ways of adapting low-cost, high bit-rate, and high-capacity technologies meant for local networks. Two standards that are amenable to such adaptation are DECT and IEEE 802.11 (WiFi), and Broadband corDECT and WiFiRe systems are, respectively, examples thereof. The corDECT system has been proven in rural deployments and shown to provide a feasible solution.
9 citations