Estimation and Design of Mc-ds-cdma for Hybrid Concatenated Coding in High Speed Vehicular Communication
نویسندگان
چکیده
The design of Multi Carrier Direct Sequence Code Division Multiple Access (MC-DS-CDMA) structure which generalizes serial and parallel concatenated code is investigated to this project. This model is ideal for designing various codes in the performance of both error floor and water floor region. We propose a concatenated code for transmitter block which is used for multi carrier direct sequence CDMA technique. Simulation results of MC-DS-CDMA uplink system using Cadence software shows the various parameters such as memory, Execution time and number of transient steps required for the Execution of MC-DS-CDMA uplink system was estimated and also power consumed was determined for each block in the transmitter. An improved concatenated code model is used for uplink mobile communication. Further system performance improvements can be obtained by concatenating inner code and outer code and the results of computer simulations demonstrate that the performance of the concatenated code was investigated.
منابع مشابه
Design and Analysis of Concatenated Coded DS/CDMA Systems in Asynchronous Channels
In this paper, we propose and analyze concatenated coding schemes for direct-sequence code-division multiple-access (DS/CDMA) systems in asynchronous channels. In the concatenated coding, bandwidth-efficient 2 -state L/(L+1)-rate 2MTCM with biorthogonal signal constellation is used for the inner code, and (2 1, d(2 1)/L/2e) RS code is used for the outer code. It is shown that we can get conside...
متن کاملThroughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
The throughput enhancement of Space-Time Spreading (STS)-based Multicarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system is investigated in this paper. Variable Spreading Factor (VSF) is utilized to improve the data throughput of the system. In this contribution, an analytical approach is proposed to compute a new expression for the Bit Error Rate (BER) performance of t...
متن کاملFuture Broadband Wireless Access Seamlessly Supporting Cellular and Hot-spot Environments
1. Introduction In order to offer higher data-rate communication services above 2 Mbps in cellular systems, High-Speed Downlink Packet Access (HSDPA) is currently under discussion in the 3rd Generation Partnership Project (3GPP) based on the W-CDMA air interface [1]. HSDPA contains such techniques as adaptive modulation and channel coding (AMC) in accordance with radio link conditions (fast lin...
متن کاملLayered Steered Space-Time-Spreading-Aided Generalized MC DS-CDMA
We present a novel trifunctional multiple-input– multiple-output (MIMO) scheme that intrinsically amalgamates space–time spreading (STS) to achieve a diversity gain and a Vertical Bell Labs layered space–time (V-BLAST) scheme to attain a multiplexing gain in the context of generalized multicarrier direct-sequence code-division multiple access (MC DS-CDMA), as well as beamforming. Furthermore, t...
متن کاملMulticarrier DS/SFH-CDMA systems
In this paper, multicarrier direct-sequence/slow-frequency-hopping (MC DS/SFH) code-division multiple-access (CDMA) systems are proposed, in which multiple carriers are modulated by the same DS waveform and hopped in frequency according to a random hopping pattern. The receiver dehops the received signal with the same pattern, provides RAKE receivers for each carrier, and combines the outputs w...
متن کامل