Networks use a variety of multiplexing techniques. For example, in time division multiplexing (TDM), a single communication channel is divided into multiple time slots, with each signal assigned to a slot and t
Gaussian and hyperbolic angle-of-arrival probability density functions are used to derive channel capacity of orthogonal frequency division multiplexing transmission employing diversity techniques and adaptive policies in cellular wireless fading environments. The intercarrier interference (ICI) power is ...
These techniques are Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA), and Orthogonal Frequency Division Multiplexing (OFDM). (Goleniewski, L. 2007) Each technique has pros and cons when compared amongst each other. The ...
The telecommunications carriers’ desire to save time and money has driven a rapid development in WDM techniques. In the mid-1990s, the carrier companies began using systems transmitting at four wavelengths, and soon upped the count to eight. Developers quickly sliced the spectrum even more finely...
Multiple Access Techniques 6.1Introduction InChapter 5we discussed thatcellular systemsdivide a geographic region into cells where mobile units in each cell communicate with the cell'sbase station. The goal in the design of acellular systemis to be able to handle as many calls as possible in a ...
To reduce the PAPR, several techniques have been proposed and used such as clipping, channel coding, temporal windowing, Tone Reservation,ii and Tone Injection. However, most of these methods are unable to simultaneously achieve a large reduction in PAPR with low complexity, with low coding over...
ETRI is the largest government funded research institute in Korea, which strives to advance science by means of formulating innovative ideas; developing new techniques; and training professional individuals in the area of information telecommunications to ultimately enhance social and economical aspects of ...
The techniques described herein may be implemented in and/or used with a number of different types of devices, including but not limited to cellular phones, tablet computers, wearable computing devices, portable media players, and any of various other computing devices. ...
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, specially designed ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various implementations can ...
FIG. 1A is a block diagram that illustrates an example video coding system 10 that may utilize techniques in accordance with aspects described in this disclosure. As used described herein, the term “video coder” or “coder” refers generically to both video encoders and video decoders. In ...