Nt1330 Unit 1 Assignment
Summer 2013
Bachelor of Science in Network Technology (B.Sc. NT) – Semester 5
BNT501 – Wireless and Mobile Communication – 4 Credits
(Book ID: B1485)
Q1. Brief the Fourth generation network. List its advantages and disadvantages?
Answer: - A 4G system is expected to provide a communication technology based on Internet Protocol. Internet protocol or IP is generally used in the computer networks for data communication among computers. All the devices are identified by a number called IP number. In 4G network this concept is extended to telephony with an intention to make data and voice communication integrated in the same architecture. The 4G network is supposed to facilitate a Gigabit speed i.e. a speed of 100+ Mega Bytes per second with a mobile node speed of up to 200km/hr. It will enable Internet access, IP …show more content…
It usually measured as the average number of bits per second. The lower the bit rate, the greater is the reliance on the speech production model. You can use fixed-rate or variable-rate speech coders depending on system and design constraints. For most real-time communication systems, a maximum fixed bit rate is specified and for non-real-time applications, such as voice Speech Coding Techniques and Standards 123 storage or for packet voice transmissions, Variable-rate coders are used. If the bit rate of the encoded bit stream is less, then smaller the bandwidth is required for transmission. Most speech coders are targeted for telephone communications, limiting the bandwidth between 300 and 3400 Hz, This requires a sampling frequency of 8 kHz and hence, this is referred to as narrow-band coding. The narrow-band speech coders that have been standardized have bit rates from 800 bps to 64 kbps. Wide-band speech signals have a bandwidth of 50–7000 Hz and are sampled at 16 kHz. For wide-band telephony, the current standards rates is from 8 kbps to 64
Bachelor of Science in Network Technology (B.Sc. NT) – Semester 5
BNT501 – Wireless and Mobile Communication – 4 Credits
(Book ID: B1485)
Q1. Brief the Fourth generation network. List its advantages and disadvantages?
Answer: - A 4G system is expected to provide a communication technology based on Internet Protocol. Internet protocol or IP is generally used in the computer networks for data communication among computers. All the devices are identified by a number called IP number. In 4G network this concept is extended to telephony with an intention to make data and voice communication integrated in the same architecture. The 4G network is supposed to facilitate a Gigabit speed i.e. a speed of 100+ Mega Bytes per second with a mobile node speed of up to 200km/hr. It will enable Internet access, IP …show more content…
It usually measured as the average number of bits per second. The lower the bit rate, the greater is the reliance on the speech production model. You can use fixed-rate or variable-rate speech coders depending on system and design constraints. For most real-time communication systems, a maximum fixed bit rate is specified and for non-real-time applications, such as voice Speech Coding Techniques and Standards 123 storage or for packet voice transmissions, Variable-rate coders are used. If the bit rate of the encoded bit stream is less, then smaller the bandwidth is required for transmission. Most speech coders are targeted for telephone communications, limiting the bandwidth between 300 and 3400 Hz, This requires a sampling frequency of 8 kHz and hence, this is referred to as narrow-band coding. The narrow-band speech coders that have been standardized have bit rates from 800 bps to 64 kbps. Wide-band speech signals have a bandwidth of 50–7000 Hz and are sampled at 16 kHz. For wide-band telephony, the current standards rates is from 8 kbps to 64