CMPU 375 - Homework 6 |
Due: by the beginning of class (10:30 AM) on Wednesday, December 7th |

**Part I**

Give an example of a set of three CDMA sender code words. (You may make them whatever length is necessary.) Explain why if all three senders send at the same time, all three transmissions can be received correctly. Show a concrete example: S1 sends the bits 01, S2 sends the bits 10, and S3 sends the bits 11: what signal will be received, and how will it be decoded for each sender?Assume that all senders have equally strong signals, interference is additive, and all senders' transmissions are synchronized.

**Part II**. From homework problems in Chapter 6 (section starts on page 560):

**Problem 4**. Assume that 802.11 does not have*any*means of allowing simultaneous transmissions to be received correctly (such as CDMA); any collision will cause the data of the colliding transmissions to be garbled.-
**Problem 7**. -
**Problem 11**.