ETT
2000
13 years 4 months ago
2000
In a previous work, we studied how to send a video stream over a noisy satellite channel using the scalability features of the MPEG-2 standard. The base and the enhancement flows w...
ETT
2000
13 years 4 months ago
2000
ETT
2000
13 years 4 months ago
2000
We analyze the effects of Doppler spread in mobile channels on Orthogonal Frequency Division Multiplex (OFDM) systems. This is important, since channel variations during one OFDM s...
ETT
2000
13 years 4 months ago
2000
: This paper is concerned with a randomized OFDM (R-OFDM) scheme. The basic principle is to apply a scrambling operation to several OFDM frames. With a proper design strategy, the ...
ETT
2000
13 years 4 months ago
2000
The input-output weight enumeration (distribution) function of the ensemble of serially concatenated turbo codes is derived, where the ensemble is generated by a uniform choice ov...
ETT
2000
13 years 4 months ago
2000
With the increasing penetration of wireless communications systems, customers are expecting the same level of service, reliability and performance from the wireless communication s...
ETT
2000
13 years 4 months ago
2000
This paper considers all-optical broadcast networks providing a number of slotted WDM channels for packet communications. Each network user is equipped with one tunable transmitter...
ETT
2000
13 years 4 months ago
2000
We propose an admission control policy for wireless multimedia networks that is based on the well known threshold-based guard channel method. The new scheme deals with two differen...
ETT
2000
13 years 4 months ago
2000
Spread spectrum multi-carrier multiple access (SS-MC-MA) systems exploit in a similar manner as MC-CDMA systems the advantages of the diversity gain due to the spread spectrum tech...
ETT
2000
13 years 4 months ago
2000
A plethora of single-carrier and multi-carrier (MC) CDMA systems have been proposed recently to mitigate intersymbol interference (ISI) and eliminate multiuser interference (MUI). ...