MIMO Performance & Condition Number Under Given SNR in LTE Testing Essay

MIMO Performance & Condition Number Under Given SNR in LTE Testing Essay

Length: 2343 words (6.7 double-spaced pages)

Rating: Research Papers

Open Document

Essay Preview


Long Term Evolution (LTE) products are quickly being seen on the market nowadays and much more products are expected in the future. With 5G proposed and expected to arrive around 2020, engineers must work and test these new products out quickly. However, the complexity of these devices does not make this task an easy one. There are many performance measures to consider such as SNR, SIR, capacity, and many more as well as different features that may be necessary to arrive at the desired results. For purposes of this project, I will evaluate a journal from Agilent Technologies that describes how to quickly determine if a MIMO channel is capable of supporting spatial multiplexing when given a particular signal-to-noise ratio (SNR). The term “condition number” will also be introduced when dealing with recovery of MIMO transmission.

Many wireless systems used today have improved data capacity using the multi-antenna system. However, not all MIMO wireless systems are suitable for spatial multiplexing. In order to accommodate this benefit, the wireless channel must have the appropriate antenna configuration and have the ability to accurately recover the channel coupling matrix coefficients. As mentioned before, engineers face many complexities when dealing with wireless channels. Among those complexities include channel correlation and interference/noise rates. That is where the condition number calculation comes in handy. The condition number is a deterministic calculation that evaluates the performance of a wireless channel while estimating for SNR demodulation for a LTE MIMO system. The aim would be to get a condition number as close as 0 dB as possible and try to avoid any values greater than 10 dB.


... middle of paper ...

...or medium correlation
>>H = evcdf(x,0.9,3) %cdf for high correlation
>>plot(x, L, x, M, x, H); %three plots


[1] Agilent Application Note, MIMO Channel Modeling and Emulation Test Challenges,
Literature Number 5989-8973N, October 2008.

[2] Agilent Technologies, MIMO Performance and Condition Number in LTE Test,
Literature Number 5990-4759EN, October 5, 2009.

[3] Advanced Engineering Mathematics, Erwin Kreyszig, 6th Edition, pg. 1025-26, 1988.

[4] LTE and the Evolution to 4G Wireless: Design and Measurement Challenges, Agilent
Technologies, 2nd Edition, chapter 6, April 1, 2013.

[5] Cumulative Distribution Plots, MathWorks, R2014a Documentation

[6] Condition Number of a Matrix, MathWorks, R2014a Documentation

[7] Rohde & Schwarz: “Assessing a MIMO Channel”, Application Note 1SP18, 2010

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

A Discussion On Firm Performance Essay

- Discussion Firm performance Although different firms have different structures, the measures of performances are relative to the location and production. The firm’s management identifies nature of the structures that fits their production and hence essential standard measurement. The relationships of the firm’s position are measured through the sales growth and dominance in market. The industries have different production line therefore calling to a relative measure depending on productivity through the profit generated....   [tags: Management, Organization, Structure]

Research Papers
1826 words (5.2 pages)

The Effect of Social Loafing on Participants in Collective and Coactive Conditions

- Social Loafing is an important concept that can be identifiable in our day to day lives such as through school work, household chores, employment and even sporting activities. The current research investigated the effect of social loafing on collective and coactive conditions through an experiment which asked participants to complete a brainstorming task asking them to list as many ways to use a pencil as they could. The results indicated that social loafing was non-significant in both collective and coactive conditions....   [tags: performance, study]

Research Papers
1866 words (5.3 pages)

Factors That Affect Student Academic Performance Essay

- Over thirty years of research in education and developmental, psychology points to behavioral engagement in learning as a critical condition for predicting children 's academic achievement (Fredricks, Blumenfeld, & Paris, 2004). Many researchers have debated whether seating arrangements in the classroom actually have a profound effect on student academic performance. There is a prevailing belief in literature that classroom seat location can affect the student’s grades and behavior (Stires, 1982)....   [tags: Learning, Education, University, Psychology]

Research Papers
1029 words (2.9 pages)

Essay about Cognitive Performance and the Impact of Colors on Human Memory

- Many research studies were conducted on cognitive performance and the impact of colors on human memory. Obviously, colors do surround each of us and they have the immediate impact on the nervous system and cognitive performance in humans. However, the idea of the direct effects of color on human is not further developed in research. The field concerns itself with the effect of color on memory performance because there are many conflicting results such as in some studies red impact people’s cognitive performance and others didn’t find any impact (Mehta & Zhu, 2009)....   [tags: psychological analysis]

Research Papers
768 words (2.2 pages)

Essay on Nurses And Occupational Stress And Reason Behind Poor Performance

- . As a result, nurses could not perform well which compromise with the quality of service. This could be improved by increase in the staff member of the hospital. The nurses’ manager should discuss with the nurses about their occupational stress and reason behind poor performance. It is the responsibilities of leaders to find out the problem associated with work culture and should encourage the nursing staff to participate in decision making program. The recruitment of new staff is equally important to solve the problem....   [tags: Nurse, Nursing, Risk, Florence Nightingale]

Research Papers
871 words (2.5 pages)

Self Evaluation Motivates Performance Essay

- Self Evaluation Motivates Performance To demonstrate that the potential for self-evaluation can motivate performance, the potential for evaluation by external sources must be eliminated. As Bandura (1986) writes, "When environmental constraints are reduced, the influence of self-evaluative motivators becomes most self-evident" (p. 479). Thus, to determine whether the self-evaluative concerns suggested by social comparison theory motivate performance, one must ensure that people feel that they cannot be individually evaluated by an externalsource....   [tags: Papers]

Research Papers
644 words (1.8 pages)

Barack Obama's Overall Positive Performance in his First Year as President

- Last year, America has elected a new president, the first American black president Barack Obama. As what all other presidents have done, they made so many promises during their campaign, in order for people to support them and win the votes to become president. President Barack Obama used the word change as his campaign tagline last year. It triggered us, the people around the world, to have the interest on how Obama has brought changes to the White House, to the political map in the United States of America, and to the world....   [tags: politics]

Research Papers
1469 words (4.2 pages)

Methods Of A Cross Sectional Design Essay

- Methods Participants There were ___ children included in this study. ___ children had to be excluded due to having prior experience with the game or not completing all of the trials. In the end, a total of ___ children (__ female, __ male) participated in this study. The ages ranged from __ years to __ years old with the average age being ___ years old. The participants were recruited from the Harley School via consent forms which were distributed during class for the parents to sign. The children were taken out of class to participate and were returned to class after the study....   [tags: Music, Performance, The Harley School]

Research Papers
773 words (2.2 pages)

Essay about NEXT PLC: Company Analysis

- ... By retrieving data from paragraph above, it will be simply calculated by inventory plus receivable days minus payable days. The cash cycle for company in 2010 and 2011 were approximate 29.52days and 41.91days. In contrast 2010 with 2011, company in 2011 was took 12.39days more on the cash cycle, which was a indicator that there was longer time for business to receive the working capital from expenditure. This result may arise from the tough environment in these years, and increasing sale. Compare NEXT PLC Current performance, financial position and liquidity with Competitor - DEBENHAMS PLC DEBENHAMS PLC DEBENHAMS PLC was a well-known British retailer group under the department basis, i...   [tags: Finance, Performance, Competition]

Research Papers
2693 words (7.7 pages)

Individual Performances Inhibit or Distract Essay

- Why does the presence of others improve individual performance in some situations but inhibit it in others. Discuss in relation to theories of social facilitation Performance in front of other people important in nowadays world. Lot of competition. Was ist social faciliation. To be able to understand why the presence of others improves or inhibits individual performances one has to know what the theory of social facilitation is. Basically, it is the tendency for people who are being watched or observed to perform better than they normally would alone on simple tasks....   [tags: audience, task, social facilitation]

Research Papers
720 words (2.1 pages)