Forward Error Correction Coding For Wimax And 3gpp Lte Modems
Request full-text Forward error correction decoding for WiMAX and 3GPP LTE modemsConference Paper in Circuits, Systems and Computers, 1977. Conference Record. 1977 11th Asilomar Conference on · November 2008 with 57 ReadsDOI: 10.1109/ACSSC.2008.5074593 · Source: IEEE XploreConference: Signals, Systems and Computers, 2008 42nd Asilomar Conference on1st Seok-Jun Lee2nd Manish Goel15.84 · Texas Instruments Inc.+ 13rd Yuming Zhu12.91 · Institute of Electrical and Electronics EngineersLast Yang Sun6.04 · Hohai UniversityShow more authorsAbstractIn this paper, we review the requirements for forward error correction (FEC) decoding for next generation wireless modems-mobile Worldwide Interoperability for Microwave Access (WiMAX) and third generation partnership project long term evolution (3GPP LTE). FEC decoder consists of mainly three components: control channel decoder, data channel decoder, and hybrid automatic repeat query (HARQ) combining. Control channel decoder is constrained by latency budget which impacts buffering as well as power management of modem signal processing chains. For WiMAX, both Viterbi and Turbo decoders are required to receive control channel while for LTE, only Viterbi decoder is required. For data-channel, a high-throughput Turbo decoder is required to support high data rate. HARQ combining is mainly dominated by memory size and bandwidth requirements given the maximum data rate, maximum number of HARQ processes and re-transmission formats. We analyze the requirements and discuss possible candidate architectures for three components.Do you want to read the rest of this conference paper?Request full-text CitationsCitations20ReferencesReferences4Performance Evaluation of Physical Layer of Mobile WiMAX System by Implementing Hybrid Channel Coding Scheme"ML algorithm is too complex, but viterbi algorithm eliminates least likely trellis path at each transmission stage and reduces decoding complexity with early rejection of unlike paths and concentrating on Survival paths of the trellis. In this way, viterbi decoding algorithm improves the efficien
4G are discussed, along with important communication related factors such as modulation techniques. · What is 4G? As the name suggests, 4G is the fourth generation of wireless cellular standards. Intended to be a major improvement over the 3G standard, 4G aims at providing high speed mobile broadband internet access. The standard can be used for wireless modems, Smartphones, etc. and typical applications include mobile web access, IP telephony, gaming services, HD mobile TV, cloud computing, etc. · Who is the standard body? Where can one find official documentation on the standard? The standard body for 4G, which set forth the requirements for the standard is the International Telecommunications https://www.researchgate.net/publication/224505577_Forward_error_correction_decoding_for_WiMAX_and_3GPP_LTE_modems Union - Radio Communications Sector (ITU(R)). Some of the standard requirements for the 4G standards are as follows: 1. Peak data rates of approximately 100Mbits/s for high mobility and 1Gbits/s for low mobility. 2. Based on an all-IP packet switched network. 3. Dynamic sharing and usage of network resources to accommodate more users per cell. 4. Peak Spectral efficiency of 15 bits/s/Hz for downlink and 6.75 bits/s/Hz for uplink. 5. Ability to offer high quality of service http://ecee.colorado.edu/~liue/teaching/comm_standards/2015S_4G/4G%20STANDARD.htm for next generation of multimedia support. Official documentation for the IEEE WiMax standard can be found at: http://ieee802.org/16/docs/ Official documentation for the 3GPP LTE standard can be found at: http://www.3gpp.org/technologies/keywords-acronyms/98-lte Information about the physical layer can be found in sections 7-10 of the following: http://www.etsi.org/deliver/etsi_ts/136200_136299/136211/10.00.00_60/ts_136211v100000p.pdf The two major technologies on which the contenders for 4G are based on the following: 1. LTE (Long Term Evolution) Advanced - 3G Partnership Project (3GPP). 2. 802.16m WiMax (Worldwide Interoperability for Microwave Access) - IEEE. · What is the frequency band allocation? LTE: - This standard cover various frequency bands designated by both a frequency and a band number. North America uses 700, 750, 800, 850, 1900, 2500 and 2600 MHz - South America uses 2500 MHz - 700, 800, 900, 1800, 2600 MHz in Europe. - 1800 and 2600 MHz in Asia. - 1800 and 2300 MHz in Australia and New Zealand. WiMax: - 2.5 GHz was used by Sprint in the United States. - 2.3 GHz is an important band in Asia. - Some countries like India and Indonesia use a combination of 2.3 and 3.3 GHz. · What Error Control Codes are used? WiMax and LTE both use some combination of Reed-Solomon codes and Turbo Principle Error Correcting codes for FEC. Channel coding in
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