OFDM references:
1) Chapter 3 in 4G LTE/LTE-Advanced for Mobile Broadband
2) Chapter 2 in Next Generation Wireless LANs: 802.11n and 802.11ac
3) Orthogonal Frequency Division Multiplexing for Wireless Communications
RF impairments references:
1) Digital Compensation for Analog Front-Ends: A New Approach to Wireless Transceiver Design
2) RF Imperfections in High-rate Wireless Systems
SC-FDMA (DFT-SPREAD OFDM) reference:
Chapter 4 in 4G LTE/LTE-Advanced for Mobile Broadband
Multiple-antenna techniques references:
1) Chapter 5 in 4G LTE/LTE-Advanced for Mobile Broadband
2) Chapter 3 in Next Generation Wireless LANs: 802.11n and 802.11ac
3) Chapters 10, 11 and 13 in MIMO-OFDM Wireless Communications with MATLAB
4) Paper: Multiple-Antenna Techniques for Wireless Communications – A Comprehensive Literature Survey