Abstract We implement a new software-based multihop TDMA MAC protocol (Soft-TDMAC) with microsecond synchronization using a novel system interface for development of 802.11 overlay TDMA MAC protocols (SySI-MAC). SySI-MAC provides a kernel independent message-based interface for scheduling transmissions and sending and receiving 802.11 packets. The key feature of SySI-MAC is that it provides near deterministic timers and transmission times, which allows for implementation of highly synchronized TDMA MAC protocols. Building on SySI-MAC's predict ....etc

[:=Read Full Message Here=:]

i wan this chart for reference.i want make the presentation on the basis of tdma cdma and fdma ....etc

[:=Read Full Message Here=:]

Time Division Multiple Access (TDMA)

TDMA, or Time Division Multiple Access was one of the first cell phone digital standards available in the United States. It was the first successor to the original AMPS analog service that was popular throughout the country, and was in popular service from the early-mid 1990's up until roughly 2003 when the last of the TDMA carriers, Cingular and AT&T, switched to the GSM digital standard.

TDMA was a significant leap over the analog wireless service that was in place at the time, ....etc

[:=Read Full Message Here=:]

:angel::)
Are you looking for tabular difference between sdma tdma fdma cdma
yes looking for tabular difference between sdma tdma fdma cdma
....etc

[:=Read Full Message Here=:]

The difference between FDMA, CDMA and TDMA
I think one of the most fundamental questions in our minds is What the difference is between telecom technologies, which said company focusing on machines about people? Right? They say the company focusing on machines about CDMA, TDMA, FDMA! We know that these technologies are different, but we are genearlly not able to understand the difference, making them! We believe that it is too technical and stop yourself from getting into it! Right? Guys, trust me, understanding the difference between the techn ....etc

[:=Read Full Message Here=:]

Error while running this code

function X = tdma(A,B,C,D)
%TriDiagonal Matrix Algorithm (TDMA) or Thomas Algorithm
% A_i*X_(i-1) + B_i*X_i + C_i*X_(i+1) = D_i (where A_1 = 0, C_n = 0)
% A,B,C,D are input vectors. X is the solution, also a vector.

% Copyright 2013 The MathWorks, Inc.

Cp = C;
Dp = D;
n = length(A);
X = zeros(n,1);
% Performs Gaussian elimination
Cp(1) = C(1)/B(1);
Dp(1) = D(1)/B(1);
for i = 2:n
Cp(i) = C(i)/(B(i)-Cp(i-1)*A(i));
Dp(i) = (D(i)-Dp(i-1)*A(i))/(B(i)-Cp(i-1)*A(i));
end
% Backward substitution, s ....etc

[:=Read Full Message Here=:]

GSM USING TDMA
Presented By:
K. Srikanth koushik Y.Nikhileshwar
MOTHER TERESA INSTITUTE OF SCIENCE &TECHNOLOGY, SATHUPALLY
KHAMMAM


ABSTRACT
Since the evolution of man he has always tried learn and gain as much as possible for himself and his community, to relate him self to the various cultures castes and creeds of mankind. This Quest for realizing and exploring has lead to inventive thinking and a constant probation and to relate to each other throughout the world they have fore bared the gap of communi ....etc

[:=Read Full Message Here=:]

Introduction
Wireless mesh networks (WMN) have become increasingly popular in the last couple
of years due to advantages like low setup cost, easy network maintenance, robustness
and reliable service coverage and technology-independence . In WMNs, each node
acts both as a host and a router, forwarding packets on behalf of other nodes, provided
that the nodes are in range of one another. This property can be exploited to extend
wireless connectivity in hard-to-reach locations .
1.1 Motivation
Outdo ....etc

[:=Read Full Message Here=:]

The Evolution of TDMA to 3G & 4G Wireless Systems

AT&T Wireless Services
TDMA
European GSM over 250 million
North American TDMA 50 million
Japanese PDC 50 million
CDMA
North American CDMA 60 million (including S. Korea)
TDMA parameters
30 KHz channels (like analog & CDPD)
20 msec speech frames
24.3 kbaud symbol rate
3 time-slots/users
7.4 kbps ACELP speech coding
1/2-rate channel coding on important bits interleaved over 2 bursts in 40 msec
Differential pi/4-QPSK modulation
EDGE Tech ....etc

[:=Read Full Message Here=:]

please help me out soon within 12 hrs as i have to attend an exam please help me out.. ....etc

[:=Read Full Message Here=:]