In your study of Fourth-generation mobile communications (4G), you have studied the OFDM and the inter-symbol...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
In your study of Fourth-generation mobile communications (4G), you have studied the OFDM and the inter-symbol interference. You have seen that overcoming inter-symbol interference can be achieved by adding a cyclic prefix to the start of each symbol. However, if no cyclic prefix is used, then a rule of thumb can be applied to delay spread and inter- symbol interference. This rule of thumb is applied as follows: provided the delay spread is not more than 10% of the symbol period, inter-symbol interference can be regarded as negligible. That is a certain amount of inter-symbol interference can be accommodated. Now, assume that a single-carrier transmission uses 32-QAM and has a bit rate of 50 Mbit/s, where NO cyclic prefix is used. i. What is the symbol rate? What is the symbol period? iii. ii. What amount of delay spread causes significant inter-symbol interference on the basis of the rule of thumb given above? A multicarrier system with 100 subchannels has the same overall data rate as the single-carrier system mentioned above. It achieves this with a symbol rate that is one-hundredth of the symbol rate of the system in part (i) above. (Again, no cyclic prefix is used.) What amount of delay spread causes significant inter-symbol interference on the basis of the rule of thumb above? iv. In your study of Fourth-generation mobile communications (4G), you have studied the OFDM and the inter-symbol interference. You have seen that overcoming inter-symbol interference can be achieved by adding a cyclic prefix to the start of each symbol. However, if no cyclic prefix is used, then a rule of thumb can be applied to delay spread and inter- symbol interference. This rule of thumb is applied as follows: provided the delay spread is not more than 10% of the symbol period, inter-symbol interference can be regarded as negligible. That is a certain amount of inter-symbol interference can be accommodated. Now, assume that a single-carrier transmission uses 32-QAM and has a bit rate of 50 Mbit/s, where NO cyclic prefix is used. i. What is the symbol rate? What is the symbol period? iii. ii. What amount of delay spread causes significant inter-symbol interference on the basis of the rule of thumb given above? A multicarrier system with 100 subchannels has the same overall data rate as the single-carrier system mentioned above. It achieves this with a symbol rate that is one-hundredth of the symbol rate of the system in part (i) above. (Again, no cyclic prefix is used.) What amount of delay spread causes significant inter-symbol interference on the basis of the rule of thumb above? iv.
Expert Answer:
Answer rating: 100% (QA)
ANSWER EXPLANATION a In simple words 4Gfourth generation is nothing but it is the s... View the full answer
Related Book For
Introduction to Financial Accounting
ISBN: 978-0133251036
11th edition
Authors: Charles Horngren, Gary Sundem, John Elliott, Donna Philbrick
Posted Date:
Students also viewed these accounting questions
-
A temperature of about 0.01 K can be achieved by magnetic cooling, (magnetic work was discussed in Problems 4.41 and 4.42). In this process a strong magnetic field is imposed on a paramagnetic salt,...
-
A temperature of about 0.01 K can be achieved by magnetic cooling. In this process a strong magnetic field is imposed on a paramagnetic salt, maintained at 1 K by transfer of energy to liquid helium...
-
A stock split can be achieved by means of a stock dividend. Do you agree? Explain.
-
Let be an arbitrary operation in Problems 5259. Describe the operation for each problem. 503 = 2; 702= 5; 901 = 8; 8 0 2 = 6;
-
Match the transactions on the left with their effects on the statement of activities on the right for a voluntary health and welfare organization. A transaction may have more than one effect....
-
One-pound coffee cans are filled by a machine, sealed, and then weighed by a local coffee store. After adjusting for the weight of the can, any package that weighs less than 16 oz is cut out of the...
-
Enter the data in Table 8-4 into a spreadsheet and perform the following tasks: Required a. Calculate an example of these batch totals: a hash total a financial total a record count b. For each of...
-
Ross, Attorney at Law, experienced the following transactions in 2013, the first year of operations: 1. Purchased $1,500 of office supplies on account. 2. Accepted $36,000 on February 1, 2013, as a...
-
How a company records or doesn't record a contingent liability is based on one of which three likelihoods that an event will take place in the future? O A. remote, reasonably possible, and certain...
-
Wayland Custom Woodworking is a firm that manufactures custom cabinets and woodwork for business and residential customers. Students will have the opportunity to establish payroll records and to...
-
Kennedy Company reports the following costs and expenses in May. Factory utilities $15,300 Direct labor $79,100 Depreciation on factory Sales salaries 48,400 Equipment 20,650 Property taxes on...
-
An Antisense RNA Is an RNA That Base - Pairs with an mRNA and Prevents Its Translation One strategy to thwart the deleterious effects of genes activated in disease states ( such as cancer ) is to...
-
Kevin has met with you and Brenda. Brenda has explained his current duties as an enduring power of attorney holder. She has also provided Kevin with a copy of Norman's will and briefly explained his...
-
Two Vectors A = 3 x + 5 y and B = (4, 0 = 35) 10. Components of B = ?
-
2. In the cart and pendulum system shown, the pendulum is made of a small sphere of mass m and a light rod of length / which rotates freely about O. (25 points) a) Using x and as the generalized...
-
Time value analysis has many applications including retirement planning, stock and bond valuation, loan amortization, and capital budgeting analysis. Time value of money uses the concept of compound...
-
Project A Project B Rate of Return Probability Rate of Return Probability -10% .02 -10% 0 .03 0 .04 10 .04 10 .14 20 .05 20 .20 30 .11 30 .24 40 .14 40 .20 50 .33 50 .14 60 .14 60 .04 70 .08 70 80...
-
A random sample of 10 houses heated with natural gas in a particular area, is selected, and the amount of gas (in therms) used during the month of January is determined for each house. The resulting...
-
Texas Instruments is a major producer of semiconductors and other electrical and electronic products. Semiconductors are especially vulnerable to price fluctuations. The following are from the...
-
The accounting process in use today is typically called double-entry bookkeeping. Discuss the meaning and possible importance of this name.
-
Cascade Tile is a wholesale distributor of ceramic tiles. Its cash balance on December 31, 20X0, was $226,000, and net income for 20X1 was $312,000. Its 20X1 transactions affecting income or cash...
-
Fayols principle of esprit de corps refers to: A. Subordination of individual interest to the common good. B. Development of a high level of employee morale. C. Encouragement of initiative and risk...
-
Dee Hock recommends that managers spend what percentage of their time managing the employees for whom they have direct responsibility? A. 0%. B. 50%. C. 75%. D. 100%.
-
According to Herzbergs theory, which job factor would be considered a motivator? A. Money. B. Vacation policies. C. Quarterly parties. D. Recognition of achievement through a clinical ladder.
Study smarter with the SolutionInn App