By Georgios B. Giannakis, Zhiqiang Liu, Xiaoli Ma, Shengli Zhou
This is often the 1st booklet on space-time coding for instant communications, essentially the most promising innovations for making sure bandwidth potency. The textual content describes theoretical ideas in addition to engineering functions; discusses key standards within the layout of functional space-time codes; and covers single-carrier and multi-carrier transmission for either unmarried- and multi-user communications.
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This is often the 1st publication on space-time coding for instant communications, the most promising options for making sure bandwidth potency. The textual content describes theoretical ideas in addition to engineering functions; discusses key standards within the layout of useful space-time codes; and covers single-carrier and multi-carrier transmission for either unmarried- and multi-user communications.
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Additional resources for Space Time Coding for Broadband Wireless Communications
N1 - 1. 1 neither assumes that Nt or N , is large nor requires the SNR to be small or large. It offers an effective way of evaluating the outage probability for practical values of Nt and N,. 2 plots the pdf of C (Nt, N , l H ) for Nt = N , = 3 and 7's ranging from 0 to 20 dB. 2: 1. The pdf of C (Nt , N , l H ) resembles that of a Gaussian random variable. 2. The mean increases with SNR and the increase for high SNR is linearly proportional to the SNR increase in decibels. 3. The variance also increases with SNR and the rate of increase becomes smaller for higher SNR values.
Thus, transmission errors become less “bursty” and with the aid of channel coding, z can be recovered reliably. Unfortunately, the price paid for the use of possibly long interleaving is excess decoding delay, which may not be tolerable in a number of applications. On the other hand, instead of using an interleaver, ST transmission resorts to multiple transmit-antennas to create multiple channel coefficients that are statistically independent if multiple transmit-antennas are well separated from one another.
Several classes of ST codes designed for frequency-selective channels are then mapped based on this duality, to obtain ST codes capable of enabling the joint space-Doppler diversity provided by time-selective MIMO channels. Furthermore, ST codes are designed in this chapter for doubly selective channels and are shown to enable the joint space-multipath-Doppler diversity. Besides coherent designs, differential ST codes are also developed. Joint Galois-Field and Linear Complex-Field ST Codes (Chapter 10) The reliability of MIMO fading links improves considerably with space-diversity but can at best reach the performance of uncoded transmissions over single-antenna AWGN channels, even if one can afford the complexity and cost of deploying multiple antennas.