What is Alamouti scheme?
What is Alamouti scheme?
The Alamouti space-time block coding is a simple MIMO technique that can be used to reduce the BER of a system, at a specific SNR, without any loss on the data rate. The presented decoding technique is called hard decision-based zero forcing and is probably the simplest to implement in hardware.
What is WIFI antenna diversity?
Antenna diversity, also known as space diversity or spatial diversity, is any one of several wireless diversity schemes that uses two or more antennas to improve the quality and reliability of a wireless link. This is because multiple antennas offer a receiver several observations of the same signal.
How do you gain diversity?
11 Ways to Increase Workplace Diversity
- Leverage diverse job boards.
- Highlight diversity on the career page on your website.
- Provide targeted internships and scholarships.
- Offer diverse mentorships.
- Conduct diversity training.
- Create an inclusion council.
- Reward diverse referrals.
- Celebrate employee differences.
How is diversity gain calculated?
In order to find the diversity gain, the power samples of the two branches are combined by selection combining (SC) and maximal ratio combining (MRC) [12]. With SC the branch with the highest power for each of the 3750 equal measurement situations is always selected.
Which is a special case of space time coding?
The Golden code is a particular case of a class of codes known as perfect space-time block codes [DV05].
What is the purpose of diversity antenna?
Antenna diversity is a technique that can be used to improve radio communication and maximize the chance of a packet getting through at a given time and in a given position between a receiver and transmitter in a non-static environment.
What is diversity technique?
Diversity techniques are used in wireless communications systems to primarily to improve performance over a fading radio channel. In such a system, the receiver is provided with multiple copies of the same information signal which are transmitted over two or more real or virtual communication channels.
What is the performance of the Alamouti scheme?
When the spatial channels h1 and h2 are correlated (e.g., take h1 = h2 as an extreme case), the Alamouti scheme performs similarly to (1.23). Figure 1.4. Performance of transmit MRC and Alamouti schemes with two transmit antennas in i.i.d. Rayleigh fading channels (for BPSK modulation).
Why is the Alamouti scheme used in WiMAX?
UL-MIMO techniques are introduced in the standards to provide additional gains on the uplink link budget compared to single transmit antenna schemes. In addition to the STC based on Alamouti scheme, the current WiMAX specifications include CDD as the transparent UL transmission technique.
What can the schemes of work be used for?
The Schemes of work can also be used as a guide throughout the F1-4 course to monitor progress against the original plan. Our Schemes of work have been edited to be in line with the KNEC syllabus and to meet the needs of Kenyan teachers and students. All subjects are covered for form 1, form 2, form 3 and form 4 classes.
What are the secondary schemes of work for 2020 / 2021?
All subjects are covered for form 1, form 2, form 3, and form 4 classes. Download these schemes and use them immediately. The Subjects whose 2020/2021 schemes of work are availed include: English, Kiswahili, Mathematics, Chemistry, Biology, Physics, Geography, History, CRE, IRE, Home science, Agriculture, Business Studies, Computer Studies, Music.