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Selected Mapping (SLM) is a well known distortionless phase control Peak-to-Average-Power-Ratio (PAPR) reduction technique for Orthogonal Frequency Division Multiplexing (OFDM) systems. A major limitation of SLM-OFDM systems is that the receiver requires exact information of the phase set used at the transmitter. Usually side information (SI) is either transmitted explicitly at the loss of data rate...
This paper presents a distributed source coding scheme for two correlated image data using Log-MAP and SOVA decoders. Both decoderspsila peak signal to noise ratio (PSNR) performance has been studied in symmetric as well as asymmetric turbo codes environment. Turbo codes are promising for distributed source coding (DSC) because of their simple encoding implementation and impressive decoding performance...
Overloading is a scheme to accommodate more users than the spreading factor N. This is a bandwidth efficient scheme to increase the number of users in a fixed bandwidth. One of the efficient schemes to overload a CDMA system is to use two sets of orthogonal signal waveforms (O/O). The first set is assigned to the N users and the second set is assigned to the additional users. An iterative multistage...
Cell overloading is a bandwidth efficient scheme to increase the number of users in a fixed bandwidth for mobile applications. One of the efficient schemes to overload a CDMA system is to use two sets of orthogonal signal waveforms (O/O) [2]. An iterative soft decision interference cancellation receiver (SDIC) scheme is used to cancel interference between the two sets of users. In this paper, the...
Overloading is a technique to accommodate more number of users than the spreading factor N. This is a bandwidth efficient scheme to increase the number users in a fixed bandwidth. One of the efficient schemes to overload a CDMA system is to use two sets of orthogonal signal waveforms (O/O). The first set is assigned to the N users and the second set is assigned to the additional users. An iterative...
In this paper we propose a new multiple access scheme using multi-symbol encapsulated orthogonal frequency division multiplexing (MSE-OFDM). MSE-OFDM is a bandwidth efficient OFDM scheme, where a number of OFDM symbols are grouped together as a frame and protected by one single cyclic prefix. We wish to explore a multiple access MSE-OFDM, where each symbol of the frame is from a different user. Performance...
Overloading is a technique to accommodate more number of users than the spreading factor N. This is a bandwidth efficient way to increase the number users in a fixed bandwidth. One of the efficient schemes to overload a CDMA system is to use two sets of orthogonal signal waveforms (O/O). The first set is assigned to the N users and the second set is assigned to the additional users. An iterative multistage...
The soft output Viterbi algorithm (SOVA) is used for data detection in indoor wireless channels representative of the JTC and wireless local area network (WLAN). The performance of SOVA-SOVA permutation as an equalizer followed by a decoder is evaluated by simulation experiment. The performance does not improve much for more than three iterations in these ISI channels. The results obtained for 1 dB...
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