As discussed in chapter 3, selected mapping (SLM) and partial transmit sequence (PTS) are the two most popular distortion-less PAPR reduction techniques but both of them require the transmission of SI, with each OFDM symbol to recover the original OFDM signal. The transmission of SI not only reduces the effective data rate, but also degrades the error performance of the OFDM system, in case of ...

The proliferation of a wide range of wireless devices operating in the ISM bands is becoming a major challenge for emerging low-power wireless networks in indoor applications. Interference can significantly reduce the overall delivery ratio of such networks, affect their availability and drain their resources. In low-power wireless networks, potential interference can be divided into two broad ...

This paper considers interference limited communication systems where the desired user and interfering users are symbol-synchronized. A novel adaptive beamforming technique is proposed for quadrature phase shift keying (QPSK) receiver based directly on minimizing the bit error rate. It is demonstrated that the proposed minimum bit error rate (MBER) approach utilizes the system resource (antenna...

Mobile WiMAX is a wireless networking system which provides wireless broadband to fixed and mobile terminals. In this paper, firstly performance evaluation of WiMAX system with channel estimation is discussed. Performance evaluation with channel estimation is used because amplitude and phase shift causes error in wireless channel. Finally, Performance evaluation of WiMAX system using adaptive e...

In this paper Bit Error Rate performance of OFDM BPSK, QPSK, 4-QAM, 16-QAM System over Rayleigh fading channel is analyzed. OFDM is a orthogonal frequency division multiplexing to reduce inter-symbol interference problem. Two of the most equalization algorithms are minimum mean square error (MMSE) equalizer and maximum likelihood sequence estimation (MLSE) equalizer. Finally simulations of OFDM...

We show that in a K transmit N receive antenna coherent narrowband communication system employing a decorrelating decision feedback detector (D-DFD, also known as BLAST), the diversity order of the joint error rate (JER) isN K+1. We derive the exact joint error rate (JER) as well as the symbol error rate (SER) without making the perfect feedback assumption and show that the diversity order of t...

In this paper, a new non data aided estimator of the technical parameters of Continuous Phase Modulated (CPM) signals is proposed. It consists in estimating jointly the modulation index, the symbol period and the frequency offset. It is based on the following observations. Firstly, the inverse of the index is the smallest positive real number a CPM signal should be raised to in order to generat...

The paper examines multi-modulation schemes (MMSs) to increase the rate of our two new Complex Orthogonal Designs (CODs) proposed for eight transmit antennas, namely C1 and C2, corresponding to the Amicable Orthogonal Designs (AODs) (8;1,1,2,2;1,1,2,2) and (8;1,1,1,4;1,1,1,4), respectively. In addition, the optimal inter-symbol power allocation in the proposed codes in single modulation as well...

This contribution deals with phase noise estimation from pilot symbols. The phase noise process is approximated by an expansion of discrete cosine transform (DCT) basis functions containing only a few terms.We propose a feedforward algorithm that estimates the DCT coefficients without requiring detailed knowledge about the phase noise statistics. We demonstrate that the resulting (linearized) m...