eve high throughput and performance. This chapter has introduced the two main cat- egories of MIMO OFDM schemes in LTE-SU-MIMO and MU-MIMO-and the related physical channel procedures. The performance of the selected codebooks has been provided to show their advantages. References 1. 3GPP TR25.814. Physical layer aspects for evolved UTRA. 2. 3GPPTR36.913. Requirements for evolved UTRA (E-UTRA) and evolved UTRAN (E-UTRAN). 3. 3GPPTR36.211. Physical channels and modulation (release 8). 4. 3GPP TR36.213. Physical layer procedures (release 8). © 2009 by Taylor & Francis Group, LLC MIMO OFDM Schemes for 3GPP LTE 5. R1-070730. Precoding codebook design for four-node-B antenna. 6. R1-060335. Downlink MIMO for EUTRA. 7. R1-060912. PU2RC performance evaluation. http://www.3gpp.org/ Symbols (k,l) resource element with frequency-domain index k and time-domain index l value of resource element (k,l) (for antenna port p) matrix for supporting cyclic delay diversity carrier frequency PUSCH scheduled bandwidth for uplink transmission, expressed as a number of subcarriers PUSCH scheduled bandwidth for uplink transmission, expressed as a number of resource blocks number of coded bits to transmit on a physical channel (for code word q) M (9) number of modulation symbols to transmit on a physical channel [for code word q] layer number of modulation symbols to transmit per layer for a physical channel layer number of modulation symbols to transmit per antenna port for a phys- ical channel a constant equal to 2,048 for Af=15 kHz and 4,096 for Af=7.5 kHz downlink cyclic prefix length for OFDM symbol l in a slot N Superscript((1) number of cyclic shifts used for PUCCH formats 1/1a/1b in a resource block with a mix of formats 1/1a/1b and 2/2a/2b bandwidth reserved for PUCCH formats 2/2a/2b, expressed in mul- tiples of NRB SC PUCCH number of resource blocks in a slot used for PUCCH transmission (set by higher layers) physical layer cell identity MBSFN MBSFN area identity downlink bandwidth configuration, expressed in multiples of NRB © 20