After an introduction to the history of mobile communications, this guide considers the basics of mobile radio, the design of cellular and private radio systems, and issues of interworking with the fixed network. It then looks at the role of the mobile radio operator, the design and operation of mobile radio networks, the needs of large user groups, and relevant regulatory and government decisions. A final section focuses on career development through resolution of conflicts, understanding managerial issues, and professional vehicles.
超寬帶UWB,包括:uwb.mdl: UWB model - open this to begin.
uwb_lib.mdl: Library blocks for UWB model.
uwb_init.m: Initialization called before model is loaded.
uwb_settings: Sets up structure containing system parameters ( uwb in workspace).
uwb_imr.m: Initializes UWB channel impulse response.
uwb_sv_*.m: Four M-files used to generate channel impulse responses (MAT files).
RECOMMENDATION ITU-R M.1653*,**
Operational and deployment requirements for wireless access systems including radio local area networks in the mobile service to facilitate sharing between these systems and systems in the Earth exploration-satellite service (active)
and the space research service (active) in the band 5 470-5 570 MHz
within the 5 460 5 725 MHz range
After the successful global introduction during the past decade of the second generation (2G) digital
mobile communications systems, it seems that the third generation (3G) Universal Mobile Communication
System (UMTS) has finally taken off, at least in some regions. The plethora of new services that
are expected to be offered by this system requires the development of new paradigms in the way scarce
radio resources should be managed. The Quality of Service (QoS) concept, which introduces in a natural
way the service differentiation and the possibility of adapting the resource consumption to the specific
service requirements, will open the door for the provision of advanced wireless services to the mass
market.
RFID, the wireless technology that has helped
millions of people around the world to protect their property and
make their workplaces safer is now in danger of being viewed as a
security risk. Ray Stanton examines the love-hate relationship
between people and Radio Frequency Identification [RFID] tags and
highlights the need for informed debate about the privacy issues the
technology raises.
The Window Design Method
The basic idea behind the design of linear-phase FIR filters using the window
method is to choose a proper ideal frequency-selective filter [which always has
a noncausal, infinite duration impulse response] and then truncate its impulse
response hd[n] to obtain a linear-phase and causal FIR filter h[n]. To truncate the
impulse response of the ideal filter a time window w[n] is used. Available windows
in Matlab are rectangular [or boxcar in Matlab], bartlett, hamming, hanning
In this program, several statistical fading channel simulators using the Sum-of-Sinusoids (SoS)has been implemented.A Rayleigh fading channel impulse respose using jakes model has been generated in matlab
MULTIPLE ACCESS TECHNIQUES
- THE MAIN ACCESSING TECHNIQUES USED IN MOBILE
COMMUNICATIONS: PERFORMANCE AND CHARACTERISTICS
-Duplex transmissions
- Multiple access in mobile communications
-Characteristics and parameters of FDMA systems
- The characteristics and parameters of the TDMA systems
- The characteristics and parameters of CDMA systems
-Packet Radio – PR
- ALOHA
