CDMA systems
Joint Transmitter Receiver Optimization in the Downlink CDMA Systems
... for CDMA systems by means of signature se- quence adaptation has been considered in [7, 8, 9, ...gain CDMA system. For the synchronous CDMA system, signature sequence sets having the least ...
11
A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... DS- CDMA systems using BPSK modulation for transmissions over Rayleigh, Ricean, Hoyt and Nakagami- m fading ...DS- CDMA system using BPSK modulation and communicating over fading channels is ...
6
Analysis of Delay in Feedback Power Control for CDMA Systems
... Transmit diversity techniques have received a lot of attention recently in the area of wireless communication. Closed–loop transmit diversity techniques can provide full diversity and increase the received SNR without ...
6
Path search algorithms for application in W-CDMA systems
... In [25] an algorithm is described for finding paths that is suitable for W- CDMA systems. The channel is modelled as a filter in discrete time, no information concerning the type of fading is given. Paths ...
122
Binary De Bruijn sequences for DS CDMA systems: analysis and results
... This article presented some results about the application of binary De Bruijn sequences in DS-CDMA systems, as user spreading codes. Binary De Bruijn sequences fea- ture great cardinality of the available ...
12
Equivalence of Linear MMSE Detection in DS CDMA and MC CDMA Systems over Time and Frequency Selective Channels
... (CDMA) systems in time and frequency selective ...different CDMA systems as special ...different CDMA systems operating over purely frequency selective and purely time selective ...
20
Spreading Sequence Design and Theoretical Limits for Quasisynchronous CDMA Systems
... QS- CDMA applications have been ...alternative CDMA technology, Li proposed a set of large area (LA) ternary sequences and a set of loosely synchronous (LS) ternary sequences having generalized or- thogonal ...
13
On Intercell Interference and Its Cancellation in Cellular Multicarrier CDMA Systems
... The handling of intercell interference at the cell border area is a strong demand in future communication systems to guarantee effi- cient use of the available bandwidth. Therefore, this paper focuses on the ...
11
Performance evaluation of single user and multiuser CDMA Systems
... a CDMA system, several users transmit information simultaneously and indepen dently over a common channel using preassigned signature ...a CDMA system w ith non-orthogonal waveforms conventional ...
228
PERFORMANCE ANALYSIS OF FIXED AND MOBILE WIMAX SYSTEM BASED ON OFDM AND MC-CDMA SYSTEMS
... For the optimization of WiMAX system performance a lot of related work can be done in the future as Adaptive modulation and coding mechanism can be used at the receiver and the transmitter according to the channel ...
9
Design and Implementation of MC CDMA Systems for Future Wireless Networks
... that systems with a maximum information bit rate of more than 2–20 Mbps in a vehicular environment and possibly 50–100 Mbps in indoor to pedestrian environments will be needed, using a 50–100 MHz ...
12
Blind Reduced Rank MMSE Detector for DS CDMA Systems
... The rest of this paper is organized as follows. In Section 2, after presenting the signal model for DS-CDMA and briefly introducing the linear MMSE detector, we derive a reduced- rank MMSE detector which lies in a ...
12
Performance of Cellular DS CDMA Systems Using Distributed Antennas
... BER versus coordinates x, y performance of the distributed antenna cellular DS-CDMA system supporting single user, when the user signal experiences pass-loss, lognormal shadowing slow fa[r] ...
5
DOA Estimation in the Uplink of Multicarrier CDMA Systems
... We consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear array. Transmission takes place over a multipath channel ...
9
Ber Improvement Of Ds-Cdma For Awgn And Rayleigh Fading Channel With Kasami Code
... In CDMA systems, all users transmit the data in the same bandwidth simultaneously and communication systems following this concept are said to be "spread spectrum systems'' so in this ...
5
Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... to the high-quality, asymptotically AWGN channel of . From the results of Fig. 7, we observe that the multitone DS-CDMA scheme marginally outperforms the orthogonal MC DS-CDMA scheme, when the channel ...
11
Efficient Bandwidth Allocation with Dynamic Coding for Quality of Service in CDMA based Wireless Communication System
... multi-sector CDMA systems, leaving the issue of decentralized non-uniform rate-assignment ...in CDMA system is ...the CDMA communication system is presented in section ...
8
Design, characterisation and performance assessment issues of multi-carrier CDMA exploiting higher order PSK/QAM formats for future wireless systems
... multi-carrier CDMA is presented in Chapter ...of CDMA multiple access ...of CDMA technology, explains the fundamentals of CDMA and describes the different CDMA techniques (namely, ...
185
Cell Breathing Technique for Load Balancing in Datacenter Networks
... Cell breathing has been contemplated for the most part with regards to CDMA cell systems. The inclusion and limit of a CDMA cell are contrarily related with one another. The expansion of the ...
9
Analytical BER Performance of DS CDMA Ad Hoc Networks using Large Area Synchronized Spreading Codes
... It is demonstrated that LAS DS-CDMA exhibits a significantly better performance than the family of classic DS-CDMA systems operating in a quasi-synchronous scenario associated with a hig[r] ...
5