… multi-carrier modulation and spread spectrum techniques, … Nc times higher than in an
FDMA system, hence leading to quite … the basic concepts of multi-carrier transmission and its …

… one of the leading candidates for future wireless systems. The objective of the paper is to
provide a survey on multi-carrier transmission techniques … access schemes (TDMA, FDMA, MC-…

… channel estimation and symbol detection technique in this chapter. Unlike in traditional … By
contrast, when appropriately selecting the system parameters and using transmit diversity, MC …

… positive acknowledgment scheme permits the transmitter to … , to transmit, here many strategies
are possible so that many … a centrally controlled FDMA system [40]. The uniqueness of this …

… hand, the technique of multi-carrier transmission has recently … The advantages of multicarrier
transmission are known such … different multiple access schemes, including OFDM-FDMA, …

… Today, many modern transmission techniques are in use for … via satellite link, the transmitter
waits for acknowledgement. If the … 1) A FDMA method is the relatively inflexible system and if …

… SC-FDMA (single carrier frequency division multiple access) is a multiple access technique
… number of users which is allocated for transmitting over the CR-based SC-FDMA system. …

… These methods, which are all are based on non-TDMA multi-… Both the CDMA and FDMA
schemes we described, are Wired… the carrier at the time it wants to transmit a ‘1’, it must transmit …

… In FDMA systems, a user is assigned a portion of a frequency … two separate channels for
continuous duplex transmission. … We discuss two diversity combining techniques used in CDMA …

… (FB) strategies are two of the most used ways to identify … for both single-carrier and
multi-carrier systems. A decision … MIMO systems is offered for determining the number of transmit …