[PDF] Top 20 Index Modulation-Aided Orthogonal Frequency Division Multiplexing and Its Applications

... The initial work on OFDM-IM was on single input single output (SISO) systems but lately, MIMO and OFDM-IM are integrated to promote and enhance the spectral efficiency and energy efficiency of the OFDM-IM system [5] ... See full document

... undergoes frequency selective fading, then complex equalization techniques are required at the receiver for single carrier modulation ...many orthogonal narrowly spaced ... See full document

... Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation technique that divides the available spectrum into subcarriers, with each subcarrier containing a low rate ... See full document

... - Orthogonal Frequency Division Multiplexing) will give greater info capacity and provide the standard of high-speed info in real time on a more robust multipath fading ...The ... See full document

... Orthogonal Frequency Division Multiplexing/Modulation (OFDM) is widely used for symbol level modulation- demodulation in communication systems for a high data rate low distance ... See full document

... digital modulation techniques like PSK (Phase Shift Keying), ASK (Amplitude Shift Keying) and QAM (Quadrature Amplitude Modulation), ...same frequency band, where each carrier may be adjusted ... See full document

... different modulation schemes, a variety of transmission rates ranging from 6 Mbits/s to 54 Mbits/s can be achieved ...coarse frequency adjustment and timing ...fine frequency adjustment and to help ... See full document

... Abstract--Orthogonal frequency-division multiplexing (OFDM) is a method of encoding digital data on multiple carrier ...in applications such as digital television and audio ... See full document

... OFDM modulation technique is generated through the use of complex signal processing approaches such as fast Fourier transforms (FFTs) and inverse FFTs in the transmitter and receiver sections of the ...is ... See full document

... on frequency selective fading channels. Orthogonal frequency division multiplexing (OFDM) is one of the most popular multicarrier technique that effectively combat with inter- symbol ... See full document

... the cyclic prefix block. After FFT/DWT operations the signal has to be equalized by using a frequency domain equalizer, then it is demodulated using QAM demodulator. Final it is converted into serial data by using ... See full document

... In FDMA each user is typically allocated a single channel, which is used to transmit all the user information. The bandwidth of each channel is typically 10 kHz-30 kHz for voice communications. However, the minimum ... See full document

... OFDM is the digital modulation technique which is used to encode digital data on multiple carrier frequency. A single data stream is split across several separate narrowband channels at different ... See full document

... in its well-known spectral efficiency (SE), which makes it very competitive with ...to its potentially high SE (Ingham ...is its ability to reach out to more than two dimensions, where each dimension ... See full document

... an orthogonal space-time transmission, which allows for ML detection at the receiver by means of simple linear ...trelliscoded modulation to multiple transmit ...[1], orthogonal space-time block ... See full document

... With the ever growing demand of this generation, need for high speed communication has become an utmost priority. OFDM has been used to meet these demands where a large number of closely spaced orthogonal ... See full document

... multiple orthogonal low bandwidth channels and the low rate data is sent into these channels in ...high frequency components leaving low frequency components intact for data ... See full document

... multicarrier modulation and CP insertion, the block symbols to be transmitted can be simply expressed as ̃ ( ) = ( ...the frequency-selective propagation will be modeled as a FIR filter with channel impulse ... See full document

... GHz frequency band Hiperlan/2 standard makes use of OFDM modulation along with TDMA access scheme to competently exploit the channels which are time dispersive with frequency selective ... See full document

... independent frequency domain OFDM signals are created after multiplication of information data block with a phase sequence set, in which lowest PAPR is selected for transmission ... See full document