Książki

technika

telekomunikacja

Multi-carrier and Spread Spectrum Systems

Opis książki Multi-carrier and Spread Spectrum Systems:

The technological progress in multi–carrier (MC) modulation led orthogonal frequency division multiplexing (OFDM) to become an important part of beyond 3G cellular mobile communication standards, including LTE and WiMAX. In addition, the flexibility offered by the spread spectrum (SS) and time division multiplexing (TDM) techniques motivated many researchers to investigate several MC combined multiple access schemes, such as MC–CDMA, OFDMA and MC–TDMA. These schemes benefit from the advantages of each sub–system and offer high flexibility, high spectral efficiency, simple detection strategies and narrow–band interference rejection capability. Multi–Carrier and Spread Spectrum Systems is one of the first books to describe and analyze the basic concepts of multi–carrier OFDM transmission and its combination with spread spectrum (MC–CDMA). The different architectures and detection strategies as well as baseband–related transceiver components are explained. This includes topics like FEC channel coding and decoding, modulation and demodulation (IFFT/FFT), digital I/Q–generation, time and frequency synchronisation, channel estimation, frequency domain equalization and RF aspects such as phase noise and non–linearity issues. Concrete examples of its applications for cellular mobile communication systems (B3G/4G) are given. Further derivatives of MC–SS (such as OFDMA, SS–MC–MA and DFT–spread OFDM) and their corresponding applications in the LTE, WiMAX, WLAN and DVB–RCT standards are detailed. Capacity and flexibility enhancements of multi–carrier OFDM systems by different MIMO diversity techniques such as space time/frequency coding (STC, SFC) and software defined radio concepts are also described.