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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT

 BICMB- OFDM MIMO was based on two over optimistic assumptions.

   First, the sth singular values realized by SVD at all subcarriers were assumed to be independent and identically distributed, which is not practical in general.

 Second, the bit interleaver was assumed to satisfy the condition that at least one error bit of each error event is carried on the sub channels with each index s, which is not always valid. Moreover,

 The relation between the diversity and the combination of the bit interleaver and the convolutional code was not investigated well enough.

PROPOSED CONCEPT

PGP offers very good performance with significantly reduced complexity both at the precoder design and receiver levels, due to the independence among different groups and it can be successfully applied

EXISTING TECHNIQUE:

    optimal technique used.

    MWF techniques.

PROPOSED TECHNIQUE:

 Per-Group Precoding (PGP)

  linear precoding techniques.

TECHNIQUE DEFINITION:

The expense of significantly increased system complexity, even for small modulation constellation size M In addition, the interesting design of requires a significant computational complexity increase at the receiver, even in its simplified implementation for M-ary Phase Shift Keying systems

.

TECHNIQUE DEFINITION:

PGP offers very good performance with significantly reduced complexity both at the precoder design and receiver levels, due to the independence among different groups and it can be successfully applied

DRAWBACKS

Complexity is High.

  It perform high power.

  Transmitter and receiver complexities high.

ADVANTAGES

  Complexity is low.

 It perform low power

 Reducing the relevant transmitter and receiver complexities.

   power–efficient applications