By Bannour Ahmed, Mohammad Abdul Matin
This publication introduces the reader to the MIMO-OFDM approach, in Rayleigh frequency selective-channels. Orthogonal frequency department multiplexing (OFDM) has been followed within the instant local-area community criteria IEEE 802.11a because of its excessive spectral potency and talent to accommodate frequency selective fading. the combo of OFDM with spectral effective a number of antenna thoughts makes the OFDM a superb candidate to beat the frequency selective problems.
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Extra resources for Coding for MIMO-OFDM in Future Wireless Systems
Amin MR, Trapasiya SD (2012) Space time coding scheme for MIMO system-literature survey. Procedia Eng 38:3509–3517 5. Zhang W, Xia X, Ching P (2007) High-rate full-diversity space-time-frequency codes for broadband MIMO block-fading channels. IEEE Trans Commun 55(1):25–34 6. El Gamal H, Damen M (2003) Universal space-time coding. IEEE Trans Inf Theory 49(5):1097 7. Fozunbal M, McLaughlin SW, Schafer RW (2005) On space-time-frequency coding over MIMO-OFDM systems. IEEE Trans Wirel Commun 4(1):320–331 8.
X W (8)]T = Θ S8(W −1)+1 . . . S8W T , W = 1, 2. 5 Multiuser Space-Frequency Code Design where, [X w (1) . . . . . . X W (12)]T = Θ S12(W −1)+1 . . . S12W 1, 2, 3, 4. 6 Conclusion This chapter presents a general MIMO-OFDM system model. The analysis is carried out for the coherent scenario where the channel state information is perfectly known at the receiver. Later on, the basic issues such as code design criteria for MIMO-OFDM links with frequency-selective fading are investigated.
Q(J ) represents the field generated by j and rational where j = −1. Z [ j] denotes the field generated by the j and integer ring. [x] represents the smallest integer larger than x. [x] represents the largest integer smaller then x. The subscripts T and H denotes the transpose and Hermitian of a complex matrix respectively. ⊗ and ◦ denotes the kronecker and Hadamard product respectively. 3 System Model Consider in a single-cell network the MIMO-OFDM system has Z users of which each user is equipped with At transmit antennas while base station (BS) has Ar receive antennas and N-tone OFDM (Fig.
Coding for MIMO-OFDM in Future Wireless Systems by Bannour Ahmed, Mohammad Abdul Matin