Time Division Multiplexing
Part A
My interest in Time Division Multiplexing started some years back when I changed my career from the automotive industry. This change was facilitated by the desire for a new challenge; I first joined the Air Force Reserve as a Technician in Transport. My new duties were taught by the help of Keesler AFB. The start of the period was getting skills on the principles of electronic. These were majorly series and parallel circuits, diodes and logic gates. The experience was quite interesting though not as appealing as I desired. The last four months I was involved in learning about the networking; the components like routers, switches and bridges. I was able to acquire skills on the varied routing protocols. This is quite interesting though my desire laid in something more to this.
I was able to get what I was looking for when I began learning about multiplexing. This topic was quite interesting in a number of ways; the thought that several lines of data could be integrated into a single line for transmission to the intended destination. It got my complete attraction. I was able to learn about division multiplexing and got myself desiring more. I have the chance to acquire extensive research with this paper.
I got skills on the time division multiplexing. Multiplexing is composed of a number of data and voice communication lines and integrating them into a single signal. Every streamis allocated a varied time slot. The data is taken to the destination, split down and then directed to the conforming machine. Timing is placed into consideration on either side so that it multiplexing may take place. There are a number of things to be learned however. I desire to acquire a better understanding of the timing principle that is applied in time division multiplexing and how it is applicable in the modern communication sector. I intend to know the equipment that is applied and its commonality in the present technically advanced world. The solution to these questions would be acquired by the use of research in varied sources as well as visiting websites related to the same.
This will be an exploratory research that is destined to look into the topic of time division multiplexing which is of little understanding. The research problem having been formulated by the questions, I will hence direct my attention to research on the literature review then the advancement of the objectives. The design of the research will following hence giving my research shape, information will be acquired and evaluated. A generalization will hence be acquired, interpreted and the results would have been acquired.
Part B
With research into the areas stated on Time Division Multiplexing, I was able to find out that it is useful in optimizing the size of traffic in the medium in use. Prior to multiplexing the medium, every telephone being applied required the use of a specific telephone line. This was quite expensive and took up too much space in addition to being unscalable model. TDM splits the bandwidth into one link into a number of channels or time parts. The TDM sends of transmits the channels using the same time space for the transmission of every channel. Consequently, the channel acquire turns in making use of the link. TDM is a physical layer model. It does not place emphasis on the type of information being multiplexed an acquired. TDM does not rely on Layer 2 protocol which has been applied by the input channels.
To acquire a better understanding of TDM, it is explained using the traffic. To send traffic from four roads to another town, one may decide to direct the traffic to a single lane if they are connected jointly to the intended lane. Hence if each of the four roads allocates a car onto the lane, the lane gets car at a particular time (ccnaanswers-khim, 2011). Consideration is kept onto the timing and speed of the car; these would not result into collision. The destination, the opposite happens and the cars are taken off the highway and directed to the feeder roads using the same method.
The principled that is applied is transmitting data over a link. TDM optimizes the size of the transmission link by dividing smaller intervals for the link to carry the bits from a number of input sources, efficiently elevating the number of bits sent in a second. With TDM the receptor and sender device of the knowledge of which data is sent. TDM is applied for a precise number of channels and bandwidth for every channel that is applied. The bandwidth that is offered to time division multiplexing makes it to contrast statistical multiplexing, that is the time that is allocated are in a sequential manner and offered on a prior basis to the channels.
The time division multiplexing came into use in the 1960s; where 1.5 Mbit/s signal was divided into 8000 frames with every byte of 24 standing in for each frame. Every byte stood for a single call at a speed of 64 Kbit/s (alquds). Currently the communication system has changed making the time division multiplexing relevant. The time division multiplexing has split into two technologies; synchronous and statistical time division multiplexing.
In synchronous time division multiplexing, every signal that comes in its chance to be sends in round style. When allocated a specific number of inputs, a synchronous multiplexor of time allows a piece of information from the first device, sending it over high speed link, allows a byte from the second device and sends a high speed link and goes on until there is an acceptance. After the last one is send, the multiplexor is send back to the first one and goes on in round model. Similarly, as opposed to accepting one byte each period from the source, the multiplexor may allow single bits as a unit from every device.
The demultiplexor in the reception has a high-speed link which has to separate the acquired byte to the relevant destination. Considering that the high speed resultant information gotten from the multiplexor does not have addressing information for the single bytes a certain order has to be kept (White, 2012). This will make it possible for the demultiplexor to disarrange and allocate the bytes to their intended owners in the same manner.
The modern multiplexor has been made in a way that if it has nothing to send, the multiplexor has to offer a slot for that appliance in the high-speed resultant stream. Considering that the time the time slot is set up in a particular statistics in the time division multiplexor the multiplexor does not acquire advantage of the free slot and allocate used machines to it. Moreover the high speed link that interfaces the two multiplexors has to be able to carry the whole signals entering even the case where there are no incoming signals.
The modern time division multiplexor has acquired the importance of keeping synchronicity in the sending and the receiving devices in a multiplexed connection. This is made possible by transmitting the multiplexor and acquiring demultiplexor, then information is kept in a simple frame and synchronization bits which are included in the frame.
Considering the TDM that is applied, anywhere from a bit to a number of bits that has been included to a frame to offer synchronization. The synchronization offer a regularly appearing bit sequence which the receptor may expect. The T-1 multiplexing is an instance of the synchronous time division multiplexor that offers a high speed connection. It makes use of voice which is digitized in addition to data. The ancient time, 1960s took up T1 for its high speed (InetDaemon, 2012). The T1 has 24 digitized media of voice and data with 64 kbps, with the desire to use the whole or part of the system being able to do so. The information from the first user is sequenced by the second till the 24th one is reached. If there is a space left it is offered to the input source. The data that is placed in is for the 24 machines are allocated to the fixed intervals. Every device is able to send information at fixed interval. The case where there are no information to send, the time slot is allocated to the appliance, and data in the sense that zeros are send. The modern time division multiplexor is made in a way to make data transfer to be more convenient and relevant when compared to the past times. The T1 communication is quite popular today and is applied in connecting businesses to high speeds like the internet service providers and WANS.
Information acquired on my areas of research was acquired through research from data communications sources which did prove to be helpful. The book was able to offer me an in-depth look at how the time division multiplexor applies the time aspects in its general operation. The high speed link of the T1, equipment used in time division multiplexor, makes it much more relevant in the modern time setting. It offers a synchronous time setting for transmitting signal from the source to the destination. Channels that are not filled not have interference on the sending of data or voice. The research has not failed to capture the development that has been there since the coming into being of communication. Every person is able to enjoy communication without any form of interference. Voice and data signals are now possible to be transmitted over a single medium at a high speed and separation happens at the reception. The process does tend to repeat itself in a set time period.
Part C
The digital procedure that is applied by Time Division Multiplexing makes it possible for a number of connections to allocate a high bandwidth of a link. As opposed to sharing a part of the bandwidth, time is what is shared. Every connection takes up a slot of time in the link. Information that is transmitted is send to a certain destination. The delivery does not change. TDM is also a principle that is digital data from varied sources is integrated into one timeshared connection. The TDM is able to integrate as number of low rate media to a single high rate. The TDM divided into synchronous time division multiplexing that applies the T1 technology, which has 24 channels.
Prior to my research, I was of the knowledge that varied number of signals is integrated into a single signal where the signals are placed into varied time slots. A good technology has have been stated is the T1 which has 24 channels. Signals are combined when being transmitted and when they reach the destination they are disintegrated into their respective channels. The process of separating the signals into their respective channels once in the destination is called demultiplexing. My research later brought me to understand that the signal transmission takes place in turns in a set time, synchronously. The multiplexor integrates low speeds link into a single high speed signal. Considering a situation where there is no information to send, the time slot is allocated to the device, where zeros are now transmitted. The T1 that is applied in makes use of both data and voice when transmitting the signals; this makes it more flexible and reliable for users. These changes are part of the relevance that the time division multiplexor has acquired in the modern time.
Time division multiplexing is one interesting topic which has captured my desire and appeal for a challenge. Its unique nature to capture a number of signals into a single signal in addition to raising its speed makes it quite appealing to me. The development that is has acquired in the world has made it not to be noticed by a number of people who use it daily. Time division multiplexing makes use of time to achieve its objective in the best way one can imagine. Its development is on the rise in varied countries with the increasing complexity of technology, this would make it much more reliable models in life.
References
Alquds. (n.d.). Chapter 8: Multiplexing. Retrieved from http://mail.alquds.edu/~f2095/Communication%20Systems/Ch8.ppt
Ccnaanswers-khim. (2011, June 30). Time Division Multiplexing (TDM). Retrieved from http://ccnaanswers-khim.blogspot.com/2011/06/time-division-multiplexing-tdm.html
Inet Daemon. (2012). Time Division Multiplexing. Retrieved from http://www.inetdaemon.com/tutorials/telecom/t-carrier/time-division_multiplexing.shtml
White, C. M. (2012). Data Communications and Computer Networks. Connecticut: Cengage Learning.
