Channel Estimation in MIMO-OFDM Systems

eswarlu, P. Venkat; Nagendra, R.

doi:10.14445/22315381/ijett-v15p246

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Hence, the proposed 2x2 MIMO OFDM system shows superior performance as depicted in Figure 14 over other combinations. Moreover, the proposed system performance is better over the system [23] in which the performance of MIMO-OFDM in terms of bit error rate is discussed for LS and MMSE channel estimation schemes. In addition, this system results superior performance over [24] in which the BER performance of MIMO-OFDM system for NLMS and DD-EW RLS channel estimation schemes is analyzed.…”

Section: Results and Analysismentioning

confidence: 99%

Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System

Pyla¹,

Raju²,

Subrahmanyam³

2018

IJECE

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Advanced Communication Systems are wideband systems to support multiple applications such as audio, video and data so and so forth. These systems require high spectral efficiency and data rates. In addition, they should provide multipath fading and inter-symbol interference (ISI) free transmission. Multiple input multiple output orthogonal frequency division multiplexing (MIMO OFDM) meets these requirements Hence, MIMO-OFDM is the most preferable technique for long term evaluation advanced (LTE-A). The primary objective of this paper is to control bit error rate (BER) by proper channel coding, pilot carriers, adaptive filter channel estimation schemes and space time coding (STC). A combination of any of these schemes results in better BER performance over individual schemes. System performance is analyzed for various digital modulation schemes. In this paper,adaptive filter channel estimated MIMO OFDM system is proposed by integrating channel coding, adaptivefilter channel estimation, digital modulation and space time coding. From the simulation results, channel estimated 2×2 MIMO OFDM system shows superior performance over individual schemes.

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Section: Results and Analysismentioning

confidence: 99%

Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System

Pyla¹,

Raju²,

Subrahmanyam³

2018

IJECE

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“…Fig 1 . Shows a comparison between the generations of cellular communication systems in terms of data download speed and the technologies used [1], [2], [3]. With the increasing request of high data transmission rates, 4 th generation system with LTE technology have developed, which uses Multi Input Multi Output -Orthogonal Frequency Divisions Multiplex (MIMO-OFDM) technology to achieve these requirements as it provides high spectral efficiency with high data rate in multipath [4]. The principle of operation OFDM technology depends on the fragmentation of the signal to be sent into several parts.…”

Section: Introductionmentioning

confidence: 99%

Implementation of LTE in Mosul city: problems and solution

Sadoon¹,

Ayoob²

2022

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9

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The selection of cell tower locations is an essential step in designing any cellular system network. The sites are selecting according to the specifications of that system. In addition, each cellular system has optimal geographic locations appropriate to the frequency and design of that system. For example, the sites of the second-generation (2 nd G) system towers may not be compatible with the sites of the fourth generation (4 th G) system towers for long-term evaluations (LTE) technology in terms of design and location. However, most companies that provide cellular service choose the same locations as the 2 nd generation towers to prepare 4 th generation service to save operating and construction costs. After operating 4 th generation service in the same locations of the 2 nd generation towers in the city of Mosul, many problems appeared in the cellular coverage. In this paper, these problems are discussing and comparing with the results of the Atoll software. Methods have been proposing to solve these problems and improve cellular coverage by up to 7% of the area covered.

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Channel Estimation in MIMO-OFDM Systems

Cited by 2 publications

References 3 publications

Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System

Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System

Implementation of LTE in Mosul city: problems and solution

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